Question

which statement is true about a basic electrical circuit? no electricity will flow through a circuit without a light bulb. no electricity will flow through a circuit that has an open switch. electricity will flow through a circuit without a source of energy. electricity will flow through a circuit that forms an incomplete loop.

Explanation:

• For the first option: A circuit can have other components (like a resistor) instead of a light bulb, and electricity can still flow if the circuit is closed and has a power source. So this is false.
• For the second option: An open switch means the circuit is broken (incomplete). Electricity needs a closed - loop path to flow. So if the switch is open, there's no continuous path, and no electricity flows. This is true.
• For the third option: A source of energy (like a battery) is required to push the electrons and create an electric current. Without an energy source, there's no potential difference to drive the current. So this is false.
• For the fourth option: A circuit needs to be a complete loop for electricity to flow. An incomplete loop means there's a break in the path, so no current can flow. So this is false.

Answer:

B. No electricity will flow through a circuit that has an open switch.