EM Induction

Coil of an AC generator has 80 turns, length 65mm and width 38mm. It spins in a uniform magnetic field of flux density 130mT at a constant frequency of 50Hz.

I've already calculated the maximum flux linkage through the coil as 26mWb (0.025688Wb).

The next part says show each side of the coil moves at a speed 6ms-1? No idea how to do this!! Any help?

Reply 1

Stonebridge

13

Original post by RU486

Coil of an AC generator has 80 turns, length 65mm and width 38mm. It spins in a uniform magnetic field of flux density 130mT at a constant frequency of 50Hz.

I've already calculated the maximum flux linkage through the coil as 26mWb (0.025688Wb).

The next part says show each side of the coil moves at a speed 6ms-1? No idea how to do this!! Any help?

With circular motion, the speed of something moving in a circle of radius r is ωr where ω is the angular velocity.
In this case, r is given by the dimensions of the coil, and ω is related to the frequency of the rotation by a standard formula.

Reply 2

RU486

OP

Original post by Stonebridge

With circular motion, the speed of something moving in a circle of radius r is ωr where ω is the angular velocity.
In this case, r is given by the dimensions of the coil, and ω is related to the frequency of the rotation by a standard formula.