Question 123 of 153
The current in an inductor is given by where is in second. The magnitude of induced emf produced in the inductor is . The self-inductance of the inductor _____ .
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Answer: 4
Electromagnetic Induction
JEE Main level, numerical answer, medium
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More Physics practice
- Electromagnetic InductionThe self-inductance of a solenoid with turns is proportional to:
- Electromagnetic InductionA circular coil of radius and turns carries current . The magnetic field at its centre is ( in ):
- Electromagnetic InductionA square loop of side cm is placed in a time varying magnetic field with magnitude as Tesla. The normal to the plane of loop makes an angle of with the field. The maximum induced emf produced in the loop is __________ mV.
- Electromagnetic InductionA circular loop of radius and resistance is placed in a time varying magnetic field . At , for the plane of the loop being perpendicular to the magnetic field and, the induced current in the loop at is . The value of is _______.
(Take ) - Electromagnetic InductionWhen a coil is placed in a time dependent magnetic field the power dissipated in it is . The number of turns, area of the coil and radius of the coil wire are , and respectively. For a second coils number of turns, area of the coil and radius of the coil wire are , and respectively. When the first coil is replaced with second coil the power dissipated in it is . The value of is _______.
- Electromagnetic InductionA circular loop of radius 7 cm is placed in uniform magnetic field of 0.2 T directed perpendicular to plane of loop. The loop is converted into a square loop in 0.5 s. The EMF induced in the loop is mV.
JEE Main Physics practice question on Electromagnetic Induction (Self and Mutual Inductance), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.