Question

Electromagnetic induction occurs when a moving coil of wire intersects with a magnetic field. Which of the following changes will increase the voltage through the wire if

everything else stays the same?
Reduce the magnetic field strength.
Increase the wire's gauge.
Make the wire out of a different conductive material.
Reduce the number of turns in the wire.
Increase speed of the moving coil.

Answer 1

To increase the voltage through the wire in electromagnetic induction, you can reduce the magnetic field strength, increase the wire's gauge, or increase the speed of the moving coil.

Step-by-step explanation:

Electromagnetic induction occurs when a moving coil of wire intersects with a magnetic field. In order to increase the voltage through the wire, we can:

1. Reduce the magnetic field strength: When the magnetic field strength is decreased, the rate of change of the magnetic field lines threading the coil decreases, resulting in a decrease in the induced voltage.
2. Increase the wire's gauge: Increasing the wire's gauge, which refers to the thickness of the wire, reduces its resistance. This decrease in resistance leads to a higher induced voltage.
3. Increase the speed of the moving coil: The faster the coil moves or the magnetic field changes, the greater the rate of change of the magnetic field lines threading the coil. This higher rate of change results in a higher induced voltage.

Learn more about Electromagnetic induction