As more resistors are added in series to a constant voltage source, the power supplied by the source
A) does not change.
B) decreases.
C) increases.
D) increases for a time and then starts to decrease.

Question

Quizplus · Accepted Answer

When resistors are added in series to a circuit with a constant voltage source, the total resistance of the circuit increases. According to Ohm's law (V = IR), if the voltage (V) is constant and the resistance (R) increases, the current (I) through the circuit decreases. Power (P) is calculated as P = VI, so if the current decreases while the voltage remains constant, the power supplied by the source decreases.

As More Resistors Are Added in Series to a Constant