Weegy: To find the voltage in a circuit when given the resistance and the current, we apply the first listed expression:
E = I x R, and inserting our known variables, we have E = 20 amps x 12 ohms = 240 volts. [ A circuit with a resistance of 12 ohms and a current of 20 amps has 240 volts applied to it.
The answer is: 240 volts. ] (More)

Weegy: To read the line voltage supplied to an appliance, you should connect the voltmeter between the 2 line or hot wires in a 220 volt system or between the line or hot and neutral in a 110 volt system. [ Never measure line voltage to ground unless you have a specific reason to do so, such as checking for a bad ground or improper wiring. ] (More)