(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data:

A. Determine the magnetic flux through a square loop of side a (see the figure) if one side is parallel to, and a distance b from, a straight wire that carries a current I.

Express your answer in terms of the variables I, a, b, and appropriate constants.

Answer: [(uIa)/(2pi)]ln((b+a)/b))

B. If the loop is pulled away from the wire at speed v, what emf is induced in it?

Express your answer in terms of the variables I, a, b, v, and appropriate constants.

Answer: Help

2. Relevant equations:

Flux=integral(B*da)

E=BLv

I think those are the two equations we need, but not 100% sure.

3. The attempt at a solution:

I have already figured out part A, and the solution is posted above, just having issue with part B.

So all I did was replaced L=length with "a", one side of the area. I am totally lost here. So please help me.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Current Carry Wire With A Loop

**Physics Forums | Science Articles, Homework Help, Discussion**