QUESTIONS WITH VERIFIED ANSWERS (100%
CORRECT ANSWERS) /ALREADY GRADED A+
What is a circuit? - A closed loop containing a power source and
something for electricity to flow through, such as a wire.
What are the main components of a circuit? - Battery, filament lamp,
switch, wire, etc.
What is a battery? - Two or more cells put together.
How does a switch control current in a circuit? - - **Closed switch:**
Allows current to flow.
- **Open switch:** Disrupts current, turning off the circuit.
What is current (I)? How is it measured? - The flow of electrons around a
circuit, measured in amperes (A).
What is potential difference (V)? How is it measured? - The force driving
the flow of electrons, provided by a power source, measured in volts (V).
What is resistance (R)? How is it measured? - Anything that resists the flow
of electrons, measured in ohms (Ω).