In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V
In a primary coil 5 A current is flowing on 220 V. In the secondary coil 2200 V are produced.…
6 years ago
Electromagnetic Induction
An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF.
An oscillator circuit consists of an inductance of 0. mH and a capacitor of 20 μF. The resonant frequency of…
6 years ago
The self induced e.m.f. in a 0.1 H coil when the current in it is changing
The self induced e.m.f. in a 0.1 H coil when the current in it is changing at the rate of…
6 years ago
Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced
Two circuits have a mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current…
6 years ago
A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length
A wire of length 1 m is moving at a speed of 2 ms⁻¹ perpendicular to its length in a…
6 years ago
In circular coil, when number of turns is doubled and resistance becomes 1/4th
In circular coil, when number of turns is doubled and resistance becomes 1/4th of initial value, the inductance becomes Options…
6 years ago
If emf induced in a coil is 2 V by changing the current in it from 8 A to 6 A
If emf induced in a coil is 2 V by changing the current in it from 8 A to 6…
6 years ago
Two coils have the mutual inductance of 0.05 H.
Two coils have the mutual inductance of 0.05 H. The current changes in the first coil as I=I₀ sin ωt,…
6 years ago
An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed
An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed from 10…
6 years ago
When a magnet is taken towards a coil, the induced e.m.f. depends on
When a magnet is taken towards a coil, the induced e.m.f. depends on Options (a) the number of turns in…
6 years ago