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**1. Homework Statement :**

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

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. Homework Equations :**

Flux=integral(B*da)

E=BLv

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.

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.