Question

Four ways to increase magnitude of current in dynamo are:

a) Increase the number of turns in the coil
b) Use a stronger magnet
c) Increase the speed of rotation
d) Increase the area of the coil

Answer 1

The four ways to increase the magnitude of current in a dynamo are: increasing the number of turns in the coil, using a stronger magnet, increasing the speed of rotation, and increasing the area of the coil.

Step-by-step explanation:

The four ways to increase the magnitude of current in a dynamo are:

1. Increase the number of turns in the coil: By increasing the number of turns in the coil, the magnetic field through the coil becomes stronger, resulting in a higher magnitude of current.
2. Use a stronger magnet: A stronger magnet produces a stronger magnetic field, which in turn results in a higher magnitude of current when the coil moves relative to the magnet.
3. Increase the speed of rotation: Increasing the speed of rotation of the coil and magnet increases the rate at which the magnetic field changes through the coil, leading to a higher magnitude of current.
4. Increase the area of the coil: Increasing the area of the coil increases the amount of wire in the magnetic field, resulting in a higher magnitude of current.