bicycle generator rotates at 1800 rad/s, producing an 18.0 V peak emf. It has a 1.00 cm by 3.00 cm rectangular coil in a 0.794 T field. (a) How many turns are in the coil?

N = 42

Explanation:

Given that,

Angular velocity,

Peak emf,

The dimensions of the rectangular coil = 1.00 cm by 3.00 cm

Magnetic field, B = 0.794 T

We know that, the emf of the coil is given by :

Where

N is number of turns in the coil

So,

or

N = 42

So, there are 42 turns in the coil.

magnityde and direction