1.
The current in a self – inductance L = 40 mH is to be increased uniformly from 1 A to 11 A in 4 milliseconds. The magnitude of emf induced in the inductor during the process is
2.
A 100 mH coil carries a current of 1 A. Energy stored in the form of magnetic field is
3.
A sqaure coil abcd is entering into the increasing cross magnetic field, the direction of induced current
4.
Lenz's law is based on the principle of
5.
A magnetic of Noth pole is moving towards a stationary coil. What will be the direction of induced current in the coil?
6.
Case_1: A conductor is moving and magnetic field is stationary. Case-2: A conductor is stationary and magnetic field is moving. Answer the followings.
7.
A conductor AB (A- bottom, B-Top) of length L is vertically placed in the dot magnetic field and conductor is moving with velocity vector v perpendicular to the length towrds right The polarity of B is
8.
A circular coil is placed to the right of an infinite wire in which current is increasing. The direction of inducced current in the circular coil is
9.
The expression of induced emf in a coil of inductance L is
10.
The SI unit of self inductance is
11.
Self inductance ofa coil depends upon
12.
If a solenoid coil has self inductance L. If its number of turns is increased twice, it self inductance becomes
13.
The energy density inmagnetic field of a solenoid is directly proportinal to
14.
If there is no relative motion between coil-1 (stationary) and coil-2 (moving towards coil-1, then
15.
The current changes from 0 A to 2 A in time 1 ms in a coil of self inductance 0.04 H. The potential difference across the coil will be
16.
What is the energy stored in a solenoid of inductance 4 H and cirrent 2 A?
17.
A square coil of area 16 m² is placed in y-z plane. The magnetic field (B X 10⁻² T) makes an angle 60⁰ to the normal to the plane. The magnetic flux passes through it is
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