Question

in what way can the magnitude of the induced current be increased

Answer 1

The magnitude of the induced current depends on the rate of change of magnetic flux or the rate of cutting of the magnetic field lines.

The factors that affect the magnitude of the induced current are,
1. The number of turns of the coil
=> As the number of turns increases, the magnitude of the induced current increases.

2. The speed of the relative motion of the conductor and the magnetic field
=> As the speed of the relative motion of the magnet increases the magnitude of the induced current increases.

3. the strength of the magnet
=> Increasing the strength of the magnet, will increase the magnitude of the induced current

Answer 2

The magnitude of the induced current be increased by following ways:

Explanation:

The formula of induced emf is given by :

$\epsilon=\dfrac{-d\phi}{dt}$

$\phi$ is the magnetic flux,

$\phi=NBA\ \cos\theta$

$\epsilon=\dfrac{-d(NBA\ \cos\theta)}{dt}$

Therefore, induced current is given by :

$I=\dfrac{\dfrac{-d(NBA\ \cos\theta)}{dt}}{R}$

It is clear that the magnitude of the induced current can be increased by :

1. Increasing the number of turns

2. Increasing the strength of magnetic field

3. Increasing area of cross section

4. Rotate the coil within the magnetic field faster

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