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A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity then
- a)its velocity will increase
- b)Its velocity will decrease
- c)it will turn towards left of direction of motion
- d)it will turn towards right of direction of motion
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A uniform electric field and a uniform magnetic field are acting along...
Due to electric field, it experiences force and decelerates i.e. its velocity decreases.
Most Upvoted Answer
A uniform electric field and a uniform magnetic field are acting along...
Explanation:
Effect of Electric Field:
- In the presence of an electric field, the electron experiences a force in the direction of the field due to its negative charge.
- This force causes the electron to accelerate along the direction of the electric field.
Effect of Magnetic Field:
- In the presence of a magnetic field, the electron experiences a force perpendicular to both its velocity and the magnetic field direction, according to the right-hand rule.
- This force causes the electron to move in a circular path with a constant speed, without any change in its velocity along the direction of the magnetic field.
Combined Effect:
- When both the electric field and magnetic field are acting along the same direction, the force due to the electric field causes the electron to accelerate in that direction.
- However, the force due to the magnetic field acts perpendicular to the electron's velocity and the direction of the magnetic field, resulting in a circular motion.
- As the electron moves in a circular path due to the magnetic field, the electric field force does not contribute to any change in its velocity along the direction of the fields.
- Therefore, the velocity of the electron projected along the direction of the fields will decrease due to the circular motion induced by the magnetic field, even though it is accelerating in the direction of the electric field.
Therefore, the correct answer is option 'b) Its velocity will decrease.'
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A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity thena)its velocity will increaseb)Its velocity will decreasec)it will turn towards left of direction of motiond)it will turn towards right of direction of motionCorrect answer is option 'B'. Can you explain this answer?
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A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity thena)its velocity will increaseb)Its velocity will decreasec)it will turn towards left of direction of motiond)it will turn towards right of direction of motionCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity thena)its velocity will increaseb)Its velocity will decreasec)it will turn towards left of direction of motiond)it will turn towards right of direction of motionCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity thena)its velocity will increaseb)Its velocity will decreasec)it will turn towards left of direction of motiond)it will turn towards right of direction of motionCorrect answer is option 'B'. Can you explain this answer?.
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