Monday, April 2, 2012

HW, E - sorry for delay

1. What is magnetic flux?

2. What is the unit of magnetic field strength?

3. What voltage is induced in a coil of wire (100 turns) if a magnetic field goes from 0.1 T to 15 T in 2 seconds? The coil has a radius of 0.1-m.

4. Now imagine that the coil above has a 15 T magnetic field hitting it constantly, but the coil rotates around it once every 0.5 seconds. What is the maximum voltage tha will be induced?

5. What is Lenz's law and how does it apply to the falling magnet demo?

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