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## Homework Statement

A square coil (25 x 25 cm) that consists of 50 turns of wire rotates about a vertical axis at 1000 revolutions per minute. The horizontal component of the Earth's magnetic field at the location of the coils is 2 x 10

^{-5}. Calculate the maximum voltage induced in the coil by this field.

## Homework Equations

[tex]\epsilon = - \frac{d \Phi_B}{dt}[/tex]

## The Attempt at a Solution

I know that I should use Faraday's law

[tex]| \epsilon | = N \frac{d \Phi_B}{dt} = N \frac{BA}{dt} = 50 \frac{(2 \times 10^{-5}) \times 0.0625}{dt}[/tex]

How do I continue from here? How do I obtain "t" from 1000 revolutions per minute? The correct answer must be 6.54 mV...