Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Assertion (A): The drift velocity is in the d...
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Assertion (A): The drift velocity is in the direction opposite to that of the electric field.
Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.
Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.
- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)A is false but R is true.
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Assertion (A): The drift velocity is in the direction opposite to that...
Both assertion and reason are individually correct statements. However, the reason for assertion is that due to the applied electric field, and electrostatic force is developed on the electron and the electrons would be accelerated in a direction opposite to the applied electric field and this motion is called directed motion of electron.
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Assertion (A): The drift velocity is in the direction opposite to that...
Both assertion and reason are individually correct statements. However, the reason for assertion is that due to the applied electric field, and electrostatic force is developed on the electron and the electrons would be accelerated in a direction opposite to the applied electric field and this motion is called directed motion of electron
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Assertion (A): The drift velocity is in the direction opposite to that...
Assertion (A): The drift velocity is in the direction opposite to that of the electric field.
Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.
Explanation:
The drift velocity is the average velocity at which charges (such as electrons) move in a conductor under the influence of an electric field. It is important to note that the drift velocity is in the opposite direction of the electric field.
Reason (R)
When an electric field is applied across a conductor, the electrons experience a force in the direction opposite to the electric field. This force causes the electrons to accelerate, gaining kinetic energy. However, due to collisions with ions and other impurities present in the conductor, the electrons lose some of their kinetic energy in each collision. As a result, the electrons do not achieve a constant acceleration, and their velocity does not increase indefinitely.
The collisions with ions and impurities cause the electrons to lose energy, and as a result, they lose velocity. However, the electric field continues to exert a force on the electrons, causing them to accelerate again. This cycle of acceleration followed by collision-induced deceleration continues until a steady-state condition is reached.
In the steady state, the acceleration due to the electric field is balanced by the deceleration due to collisions, resulting in a constant average drift velocity. This drift velocity is in the opposite direction of the electric field because the electrons lose energy and velocity in each collision.
Conclusion:
Both the assertion and the reason are true. The reason provides a correct explanation for the assertion. Therefore, option B is the correct answer.
Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.
Explanation:
The drift velocity is the average velocity at which charges (such as electrons) move in a conductor under the influence of an electric field. It is important to note that the drift velocity is in the opposite direction of the electric field.
Reason (R)
When an electric field is applied across a conductor, the electrons experience a force in the direction opposite to the electric field. This force causes the electrons to accelerate, gaining kinetic energy. However, due to collisions with ions and other impurities present in the conductor, the electrons lose some of their kinetic energy in each collision. As a result, the electrons do not achieve a constant acceleration, and their velocity does not increase indefinitely.
The collisions with ions and impurities cause the electrons to lose energy, and as a result, they lose velocity. However, the electric field continues to exert a force on the electrons, causing them to accelerate again. This cycle of acceleration followed by collision-induced deceleration continues until a steady-state condition is reached.
In the steady state, the acceleration due to the electric field is balanced by the deceleration due to collisions, resulting in a constant average drift velocity. This drift velocity is in the opposite direction of the electric field because the electrons lose energy and velocity in each collision.
Conclusion:
Both the assertion and the reason are true. The reason provides a correct explanation for the assertion. Therefore, option B is the correct answer.
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Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?
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Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?.
Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
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ample number of questions to practice Assertion (A): The drift velocity is in the direction opposite to that of the electric field.Reason (R): At each inelastic collision with an ion, an electron loses energy, and a steady-state condition is reached where a finite value of drift speed is attained.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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