True or False: Electrical current will not flow unless it is in a circuit.

• A. True
• B. False
• C. It depends
• D. Not necessarily

Answer: (A)

Electric current is the flow of electric charges, and for those charges to keep moving there must be a complete path from the source back to itself. If the path is open—an incomplete circuit—the charges can’t complete the loop, so the flow stops almost instantly. When you close the circuit, the current can circulate and power devices like a lamp. In practice, tiny transient currents can occur due to stray capacitances or leakage, but in steady state there is no sustained current without a closed loop.