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

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), where V is the voltage, I is the current, and R is the total resistance, an increase in resistance leads to a decrease in current. Since power (P) can be calculated as P = VI (where V is the voltage and I is the current), a decrease in current results in a decrease in the power supplied by the source.

As More Resistors Are Added in Series to a Constant