Physics

Problem

(a) Derive an expression for the maximum current that may flow through a resistor of resistance

R

if the power dissipation must not exceed a specified limit

P_{\max}

. (b) Using your result, calculate this maximum current when

R = 12\,\Omega

and

P_{\max} = 48\,\text{W}

. a. (a) Derivation b. (b) Numerical calculation