Chapter 10, Problem 17RQ

In a circuit consisting of two lightbulbs connected in series, if the current through the one bulb is $1\text{A}$, what is the current through the other bulb?

To determine

The current through the other bulb.

Answer to Problem 17RQ

The current through the other bulb is also $1\text{A}$.

Explanation of Solution

The resistors in the series circuit are connected by end to end connections. The single path is available for the flow of current across all resistors. The current in the complete circuit remains constant. The voltage drop across each resistor in the circuit divides in the ratio of the resistor.

The current in the series circuit remain same for complete circuit, so the same current passes through each electric device in the circuit.

The current through the one bulb in the series circuit is $1\text{A}$ remains same through the other bulb in the series circuit.

Conclusion:

Therefore, the current through the other bulb is also $1\text{A}$.