Extra exam question E7D13

WhyPower dissipated by a series linear voltage regulator is calculated as the voltage difference from input to output multiplied by the output current. Power dissipated by a series linear voltage regulator is found by multiplying the voltage difference between its input and output by the output current flowing through it, since that voltage drop times the current passing through the pass transistor is exactly the power being converted to heat in that device, answer C. Input voltage times input current, input voltage divided by output current, and output voltage times output current don't correctly capture what's actually being dissipated specifically in the regulator's own pass element.