Wednesday
December 7, 2016

Homework Help: Physics

Posted by Alyssa on Sunday, February 17, 2013 at 8:38pm.

A circular conducting coil with radius 3.40 cm is placed in a uniform magnetic field of 1.090 T with the plane of the coil perpendicular to the magnetic field. The coil is rotated 180° about the axis in 0.222 s.

(a) What is the average induced emf in the coil during this rotation?

I got 35.7mV and I am almost positive this is right.

(b) If the coil is made of copper with a diameter of 0.900 mm, what is the average current that flows through the coil during the rotation?

I used I=V/R and R=pL/A (where p is resistivity of copper 1.67e-8) and got I 481A but this is not right. Please help!

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