If a single source is removed from a series circuit, the circuit current will

If a single source is removed from a series circuit, the circuit current will

• A. Double
• B. Stop (become zero)
• C. Increase
• D. Remain the same

Answer: (B)

In a series circuit, current is the same everywhere because there’s only one path for charges to flow, and it’s driven by the power source. If the single source is removed, there’s no voltage to push the charges around the loop, so the circuit cannot carry current. With no driving force, I drops to zero (I = V/R and V becomes zero when the source is gone, or the loop is opened), so the current stops. That’s why the current does not double, increase, or stay the same—it goes to zero without a source.

In a series circuit, current is the same everywhere because there’s only one path for charges to flow, and it’s driven by the power source. If the single source is removed, there’s no voltage to push the charges around the loop, so the circuit cannot carry current. With no driving force, I drops to zero (I = V/R and V becomes zero when the source is gone, or the loop is opened), so the current stops. That’s why the current does not double, increase, or stay the same—it goes to zero without a source.