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# Problem: A bicycle generator rotates at 1900 rad/s, producing an 18.0 V peak emf. It has a 1.00 cm by 3.00 cm rectangular coil in a 0.770 T field.(a) How many turns are in the coil?(b) Is this number of turns practical for a 1.00 cm by 3.00 cm coil?Yes / No

###### FREE Expert Solution

(a)

Peak emf produced by the generator:

$\overline{){{\mathbf{\epsilon }}}_{{\mathbf{0}}}{\mathbf{=}}{\mathbf{N}}{\mathbf{A}}{\mathbf{B}}{\mathbf{\omega }}}$

A = LW = (3.00 × 10-2)(1.00 × 10-2) = 3 × 10-4 m2

The number of turns, N:

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###### Problem Details

A bicycle generator rotates at 1900 rad/s, producing an 18.0 V peak emf. It has a 1.00 cm by 3.00 cm rectangular coil in a 0.770 T field.

(a) How many turns are in the coil?

(b) Is this number of turns practical for a 1.00 cm by 3.00 cm coil?

Yes / No