# Electric motors & faraday's law

1. Oct 2, 2008

### jackd

1. The problem statement, all variables and given/known data
Eliza connects a power supply, switch, and a multimeter (in ammeter mode) in series with a wire coil. The wire coil is held into place by 2 connecting wire leads. One of the wire leads has been stripped off of the insulating enamel coating so that half the wire is bare; the other lead has been completely stripped bare.

1. What orientations of the coil will give a current through it due to the battery?

2. During the time that there is a current through the coil, which side of the coil will act like a north pole and which side will act like a south pole? Explain?

3. How will the coil behave when placed above the magnet and the switch is closed?

2. Relevant equations
Magnetic Flux = B*Acos($$\theta$$

3. The attempt at a solution
The part without coating will give a current, but the part that has coating will not?
Very lost...

2. Oct 2, 2008

### Redbelly98

Staff Emeritus
Yes.

For the rest, it's hard to see what's going on without a figure.