Electromagnetic Induction questions
610 published questions with worked solutions.
- The charge which will flow through a galvanometer of resistance 200 , connected to a 400 , circular coil 1000 turns wound on a...
- A metal disc of radius 'R' rotates with an angular velocity ' ' about an axis perpendicular to its plane passing through its...
- Two coils P and S have a mutual inductance of 3 10^ -3 H. If the current in the coil P is I=20 (50 t) then the maximum value of...
- If 'N' is the number of turns in a circular coil, the value of its self-inductance varies as
- Two coils A and B placed in a circuit. When current in the coil A changes by 0.8 A the magnetic flux in coil B changes by 0.16...
- The self inductance 'L' of a solenoid of length ' ' and area of cross-section 'A' with a fixed number of turns 'N' increases as
- A long solenoid with 15 turn per cm has a small loop of area 2.0 cm^2 placed inside the solenoid normal to its axis. If the...
- A one microfarad condenser is charged to 50 V. the charging battery is then disconnected and a 10 mH coil is connected across the...
- The magnetic flux linked with the coil varies with time as = 4t^2 + 3t + 7. The magnitude of the induced e.m.f. at t = 2s is
- Two coils of self inductance 1 H and 3 H are connected in series. Their mutual inductance is 5 H. The self-inductance of the...
- When a current of 4 A changes to 8 A in 0.6 s in a primary coil, it induces an e.m.f. of 50 mV in secondary coil. The mutual...
- A metal rod of length ' ' rotates about one of its ends in a plane perpendicular to a magnetic field of function 'B'. If the...
- If the current flowing through a coil is reduced by 50% then, the energy in the coil will
- A coil having effective area 'A' is held with its plane normal to magnetic field of induction 'B'. The magnetic induction is...
- A battery connected to a capacitor of capacity 20 is charged to a potential of 35 V. The battery is disconnected. A pure inductor...
- If current 'I' is flowing in the closed circuit with collective resistance 'R', the rate of production of heat energy is the loop...
- Two coils A and B have mutual inductance 0.008 H. The current changes in the coil A, according to the equation I = I_m sin ,...
- An alternating voltage of frequency ' ' is induced in electric circuit consisting of an inductance 'L' and capacitance 'C',...
- The mutual inductance (M) of the two coils is 3 H. The self inductances of the coils are 4 H and 9 H respectively. The...
- The magnetic flux through a loop of resistance 10 is varying according to the relation = 6t^2 + 7t + 1, ,where is in milliweber,...
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