7. Electricity and Magnetism

Electromagnetic Induction — Quiz

Test your understanding of electromagnetic induction with 5 practice questions.

Practice Questions

Question 1

A coil of 30 turns is placed in a magnetic field of $0.2 \, T$. If the area of the coil is $0.1 \, m^2$ and the magnetic field is reduced uniformly to zero in $0.4 \, s$, what is the magnitude of the induced EMF?

Question 2

A circular loop of radius $0.05 \, m$ is placed in a magnetic field of $0.3 \, T$. The field is reduced to zero uniformly in $0.2 \, s$. What is the magnitude of the induced EMF?

Question 3

A coil of 100 turns and area $0.02 \, m^2$ is placed in a magnetic field that changes at a rate of $0.1 \, T/s$. What is the induced EMF?

Question 4

A rectangular loop of dimensions $0.1 \, m \times 0.05 \, m$ is rotated in a magnetic field of $0.5 \, T$ at a rate of $20 \, rad/s$. What is the maximum induced EMF if the loop has 50 turns?

Question 5

A coil with 25 turns is placed in a magnetic field of $0.4 \, T$. The area of the coil is $0.03 \, m^2$. If the field is reduced to zero uniformly in $0.5 \, s$, what is the magnitude of the induced EMF?