Factors Affecting the Size of an Induced Potential in a Current-Carrying Wire

The video tutorial explains electromagnetic induction, where a potential difference is induced in a conducting wire moving relative to a magnetic field. It demonstrates this with examples, showing how the direction of movement affects the potential difference. The tutorial also discusses factors affecting the size of the induced potential, such as the number of wire turns, magnetic field strength, and speed of movement. Finally, it compares industrial and domestic generators, highlighting the larger induced potentials in industrial settings.

What happens to the potential difference when a conducting wire is moved downwards in a magnetic field?

• A positive potential difference is induced.

• The potential difference remains constant.

• No potential difference is induced.

• A negative potential difference is induced.

What is the generator effect?

• The phenomenon where a magnetic field is created by a moving wire.

• The induction of a current in a wire due to a potential difference.

• The increase in resistance due to a moving magnetic field.

• The decrease in potential difference when a wire is stationary.

What happens when both the coil of wire and the magnet are stationary?

• A positive potential difference is induced.

• A negative potential difference is induced.

• The potential difference fluctuates.

• No potential difference is induced.

How does increasing the number of turns of wire affect the induced potential difference?

• It increases the potential difference.

• It has no effect on the potential difference.

• It decreases the potential difference.

• It reverses the direction of the potential difference.

What effect does a stronger magnetic field have on the induced potential difference?

• It increases the potential difference.

• It decreases the potential difference.

• It reverses the potential difference.

• It has no effect on the potential difference.

How does the speed of movement between a magnetic field and a conducting wire affect the induced potential difference?

• Faster movement increases the potential difference.

• Faster movement decreases the potential difference.

• Faster movement reverses the potential difference.

• Speed has no effect on the potential difference.

What is a key difference between industrial and domestic generators?

• Domestic generators use larger coils.

• Domestic generators produce more current.

• Industrial generators use larger coils and magnets.

• Industrial generators use smaller magnets.