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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.
Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
- e)Both Assertion and Reason are false.
Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) ...
In a conductor, the average velocity of electrons is zero. Hence no current flows through the conductor. Hence, no force acts on this conductor.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion: In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.
Reason: Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.
The correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
Explanation:
Assertion (A) is true:
In a conductor, free electrons are present. These free electrons are in constant motion due to thermal energy. However, in the presence of a magnetic field, these free electrons do not experience any magnetic force.
Reason (R) is false:
The reason given is incorrect. The force on free electrons due to a magnetic field does not always act perpendicular to their direction of motion. The force depends on the direction of the magnetic field and the direction of the current flow in the conductor.
The correct explanation for the absence of magnetic force on a conductor in a magnetic field is the principle of electromagnetic induction. According to Faraday's law of electromagnetic induction, a changing magnetic field can induce an electric current in a conductor. When a conductor moves through a magnetic field or if there is a change in the magnetic field, an electromotive force (EMF) is induced in the conductor. This induced EMF generates an electric current in the conductor, which creates a magnetic field that opposes the original magnetic field.
This phenomenon is known as Lenz's law, which states that the induced current in a conductor will always flow in a direction that opposes the change in magnetic field that produced it. As a result, the magnetic force acting on the free electrons in the conductor is canceled out by the opposing magnetic field generated by the induced current. This is why no net magnetic force acts on a conductor in a magnetic field.
Therefore, the correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
Reason: Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.
The correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
Explanation:
Assertion (A) is true:
In a conductor, free electrons are present. These free electrons are in constant motion due to thermal energy. However, in the presence of a magnetic field, these free electrons do not experience any magnetic force.
Reason (R) is false:
The reason given is incorrect. The force on free electrons due to a magnetic field does not always act perpendicular to their direction of motion. The force depends on the direction of the magnetic field and the direction of the current flow in the conductor.
The correct explanation for the absence of magnetic force on a conductor in a magnetic field is the principle of electromagnetic induction. According to Faraday's law of electromagnetic induction, a changing magnetic field can induce an electric current in a conductor. When a conductor moves through a magnetic field or if there is a change in the magnetic field, an electromotive force (EMF) is induced in the conductor. This induced EMF generates an electric current in the conductor, which creates a magnetic field that opposes the original magnetic field.
This phenomenon is known as Lenz's law, which states that the induced current in a conductor will always flow in a direction that opposes the change in magnetic field that produced it. As a result, the magnetic force acting on the free electrons in the conductor is canceled out by the opposing magnetic field generated by the induced current. This is why no net magnetic force acts on a conductor in a magnetic field.
Therefore, the correct answer is option 'C' - Assertion (A) is true but reason (R) is false.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are false.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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