Question

Faraday's law states that a changing magnetic field will create an electric field that curls around the magnetic field. To quantify this, we use the expression of flux (Φ) which is the magnetic field strength multiplied by the area (A) it’s passing through. This is given by: Φ = ??

The electric field is applied to the outside edge of this area. This created an electric potential that is referred to as an electro-motive force (EMF, ε). Faraday’s law can be expressed as the following:
? = -ΔΦ/ Δ?

Q1. Suppose there is a loop with a radius of 10 cm, and an EMF of 10 V is measured. What is the rate the magnetic field changed per time?

Q2. What would happen if the magnetic field were to decrease in strength?

Q3. What would happen if the magnetic field increases or decreases, but is pointing in the opposite direction compared to what is shown?

Answer 1