Question

Explain the various methods of producing induced current.

Answer 1

Moving a magnet towards a coil sets up a current in the coil circuit,
(ii) If a coil is moved rapidly between the two poles of a horse-shoe magnet, then an electric current is induced in the coil. 

Answer 2

Explanation:

The induced emf in the coil is given by the rate of charge of magnetic flux in it. It is given by :

$\epsilon=\dfrac{d\phi}{dt}\\\\\epsilon=\dfrac{d(NBA)}{dt}$

Also,

$\epsilon=IR$

R is resistance and I is induced current

$I=\dfrac{1}{R}\dfrac{d(NBA)}{dt}$

So, the methods of producing induced currents are :

1. On increasing number of turns in the coil

2. Magnetic field

3. Are of cross section.

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Induced current

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