Question
A constant voltage is applied across a circuit. If the resistance in the circuit is doubled, what is the effect on the power dissipated by the circuit?
a. The power dissipated is reduced by a factor of 4.
b. The power dissipated is quadrupled.
c. The power dissipated is doubled.
d. The power dissipated is reduced by a factor of 2.
e. The power dissipated remains constant.
a. The power dissipated is reduced by a factor of 4.
b. The power dissipated is quadrupled.
c. The power dissipated is doubled.
d. The power dissipated is reduced by a factor of 2.
e. The power dissipated remains constant.
Answers
Henry
d. Reduced by a factor of 2: P = V^2/2R.