# EMF induced in loop

1. May 30, 2010

### beetle2

1. The problem statement, all variables and given/known data
C
alculate the emf (in volts) induced in a loop of wire if the magnetic flux in the loop increases from zero to 71.1 milliweber in 16.7 millisec.

2. Relevant equations

faradays Law

3. The attempt at a solution

The only law I know is faradays law which uses Area. Is there another formular that does not need it?

2. May 31, 2010

### RoyalCat

Faraday's Law is the only one that links the induced EMF to the change in Magnetic Flux, why would you want to use anything else?

$$\mathcal{E} = -\frac{d\Phi_B}{dt}$$

You're given the change in the magnetic flux (Remember, one Weber is one Tesla * m^2) and the time over which the change occurred in this question.

3. May 31, 2010

### beetle2

So would it just be

71.1mWb / 16.7 ms = 4.25 mV ?

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