The maximum power dissipated by a 100Ω resistor in a circuit is 4W. Calculate the voltage across the resistor. by Sunday | May 22 | Physics WAEC | 0 comments A. 10V B. 20V C. 25V D. 400V Correct Answer: Option B B. 20V Explanation V²=PR=V=√4×100 = 20V Users Also Read These:A battery of emf 24V is connected to three resistors…An electric generator with a power output of 3.0KW…In a series R-L-C circuit at resonance; the voltages…Three identical lamps each power 100W are connected…A battery of emf 24V is connected to three resistors…