- 212

- 0

**1. Homework Statement**

A loop of wire of aream 0.32m^2 is palced in a 0.75 T magnetic field. The magnetic field is changed to 0.35 T in the opposite direction in 0.45 s . What is the magnitude of the current through the 15 ohm resistor.

**2. Homework Equations**

emf = -N (flux / time)

**3. The Attempt at a Solution**

emf = (-1) [(.35T)(.32m^2)-(.75T)(.32m^2)]/(.45s)

emf = .284 V

V = IR

I = .284 V / 15ohm

I = .019 A

.019 is the wrong answer in the multiple choice

the correct answer is supposed to be 0.052 A

Thanks