Two identical circular coils A and B are kept on a horizontal tube
Two identical circular coils A and B are kept on a horizontal tube side by side without touching each other.…
7 years ago
Electromagnetic Induction
The induced emf in a coil of 10 H inductance in which current varies
The induced emf in a coil of 10 H inductance in which current varies from 9 A to 4 A…
7 years ago
If a charge in current of 0.01 A in one coil produces a change in magnetic flux
If a charge in current of 0.01 A in one coil produces a change in magnetic flux of 1.2 x…
7 years ago
The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11 A
The current in a self-inductance L=40 mH is to be increased uniformly from 1A to 11A in 4 ms. The…
7 years ago
Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies with time t (in sec)…
7 years ago
A very small circular loop of radius a is initially (at t=0) coplanar and concentric
A very small circular loop of radius a is initially (at t=0) coplanar and concentric with a much larger fixed…
7 years ago
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec. Given L=10 µH.…
7 years ago
The initial rate of increase of current, when a battery of emf 6 V is connected
The initial rate of increase of current, when a battery of emf 6 V is connected in series with an…
7 years ago
Large transformers, when used for some time, become hot and are cooled by circulating
Large transformers, when used for some time, become hot and are cooled by circulating oil. The heating of transformer is…
7 years ago
The identical loops of copper and aluminium are moving with the same speed
The identical loops of copper and aluminium are moving with the same speed in a magnetic field. Which of the…
7 years ago