What is the current in watts for a 9-volt battery connected to a 2 ohm resistor?
AnswerDC circuit power is P=VxI, where I=V/R. 9v/2r=4.5 amps (I) therefore, 9 volts x 4.5 amps = 40.5 watts.
ARE 4.0 exam prep: BS
AnswerDC circuit power is P=VxI, where I=V/R. 9v/2r=4.5 amps (I) therefore, 9 volts x 4.5 amps = 40.5 watts.
ARE 4.0 exam prep: BS
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