ICSE Class 10 Electromagnetic Induction — Mock Test

Free online mock test for Electromagnetic Induction (ICSE Class 10 Physics) — 79 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.The current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emf of 200 V is induced, the self-inductance of the circuit is
   • A.4 H
   • B.2 H
   • C.0.4 H
   • D.40 H
2. 2.Assertion (A): Lenz's law is consistent with the law of conservation of energy. Reason (R): The induced current opposes the change in flux, so external work must be done to maintain the change.
   • 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
3. 3.In Experiment 6.3, why is a momentary deflection observed only when the tapping key is pressed or released, but not while it is held pressed?
   • A.The flux through coil C1 changes only while the current is rising or falling
   • B.The galvanometer is faulty during steady current
   • C.The battery stops supplying current when the key is held
   • D.The coils physically move when the key is pressed
4. 4.A coil of area 0.05 m^2 is placed in a uniform magnetic field of 0.4 T with the field perpendicular to the plane of the coil. The magnetic flux through the coil is:
   • A.0.002 Wb
   • B.0.02 Wb
   • C.0.2 Wb
   • D.2.0 Wb
5. 5.![motional_emf_rod_rails.png]() In the figure, the rod PQ of length l slides on the rails towards the left with constant speed v through a uniform magnetic field B directed into the plane of the loop. The magnitude of the motional emf induced across the rod PQ is:
   • A.B l v
   • B.B l v squared
   • C.B l squared v
   • D.B v over l