Question

dynamo works according to this principle. the only difference is that the magnet turns and does not move back and forth.
when the magnet turns in the coil of wire, the coil generates a sine wave voltage. when the magnet has rotated once, the voltage has been positive once and negative once. this is one cycle.
the amount of voltage generated depends on:

• the rotation speed of the magnet.
• the strength of the magnet.
• number of turns in the coil.
• the distance between the coil and the magnet.

2
change the rotation speed of the magnet a number of times.
as the rotation speed increases:
☑ the voltage produced increases.
☑ the voltage produced decreases.
☑ the voltage produced remains the same.

Explanation:

According to electromagnetic induction principles, a faster rotating magnet increases the rate of magnetic flux change through the coil. A higher rate of flux change induces a greater voltage in the coil.

Answer:

The voltage produced increases.