Motional Emf MCQ Tests
12th Class Physics MCQ Tests
Motional Emf
of 12th Class Physics has 5 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 5
Total Marks: 5
Time: 5 Mins
Total Questions: 5
Total Marks: 5
Time: 5 Mins
5Min : 00 Sec Remaining
Question # 1
A conductor of length L is moved in a magnetic field perpendicular to the field with velocity v. The magnetic field strength is B. An emf ϵ is induced in the conductor. If the length of the conductor in the field is doubled, what will be the magnitude of emf?
Question # 2
A conducting rod moves perpendicular to a field with a speed of 12 ms −1 and emf induced in the rod is 150 V. What should be the speed of the rod so that an emf of 200 V is induced?
Question # 3
A conducting rod of length 1.5 m moves with a velocity of 10 ms−1 in a magnetic field of 5 T. The velocity and field are at right angle to each other. Calculate the induced emf.
Question # 4
A conducting rod of length 1.3 m moves with a velocity of 15 ms −1 in a magnetic field of 6T. The angle between field and velocity is 40°. Calculate the induced emf.
Question # 5
A potential difference is induced across the ends of a conducting rod as it moves in a magnetic field. Which of the following is the reason of this potential difference?
Total Questions
12345
Question # 1
A conductor of length L is moved in a magnetic field perpendicular to the field with velocity v. The magnetic field strength is B. An emf ϵ is induced in the conductor. If the length of the conductor in the field is doubled, what will be the magnitude of emf?
Question # 2
A conducting rod moves perpendicular to a field with a speed of 12 ms −1 and emf induced in the rod is 150 V. What should be the speed of the rod so that an emf of 200 V is induced?
Question # 3
A conducting rod of length 1.5 m moves with a velocity of 10 ms−1 in a magnetic field of 5 T. The velocity and field are at right angle to each other. Calculate the induced emf.
Question # 4
A conducting rod of length 1.3 m moves with a velocity of 15 ms −1 in a magnetic field of 6T. The angle between field and velocity is 40°. Calculate the induced emf.
Question # 5
A potential difference is induced across the ends of a conducting rod as it moves in a magnetic field. Which of the following is the reason of this potential difference?
Total Questions
12345
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Updated on: 17-05-2026
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