l Homopoiar Motor Michael Faraday came up with a relatively simple DC generator called a homopolar generator (shown above). A conducting wheel of diameter D rotates with angular velocity at in a uniform B-field oriented along the wheel axis. Sliding contacts make an electrical connection between the center of the wheel and the edge, as shown, and an EMF is induced across a load resistance R. 1.1 Show that the power dissipated in the resistor is ??w23204/R, (where the \"??\" is some numerical constant out front. 15 it 1, 0.5, r,...?) 1.2 How fast would a 1 m diameter generator in a 0.2 Tesla magnetic eld have to rotate to produce an EMF of 120 V? (answer in Hz, please)