Skip to content
Back to quiz
6. what is the equation for charge flow?
- electrons x time
- current x time
- voltage x time
- electrons x current
7. what does the blue neutral wire do?
- nothing
- ensure the casing doesn't become active
- complete the circuit
- carries the mains electricity
8. how are components connected in parallel circuits?
- they aren't
- separately connected to the positive and negative end of the power supply
- next to each other in a line
- coming from a hub branching off the power supply
9. what is the unit for charge?
- volts (v)
- grams (g)
- amps (A)
- coulombs (C)
10. what is the equation for potential difference?
- P.d. = current x resistance
- P.d. = voltage x resistance
- P.d. = voltage x current
- P.d. = 2 x current
11. which best describes the current in ac electricity?
- constantly changing direction
- straight line
- zig-zag
- moving at a constant pace
12. what does total charge in a circuit depend on?
- current and time
- charge and voltage
- charge and time
- temperature and time
13. what does the green and yellow earth wire do?
- completes the circuit
- stops appliance casing from becoming live
- carries mains electricity
- nothing
14. what is a light dependant resistor?
- resistor that needs light to work
- resistor that changes based on light intensity
- LED that changes light output based on resistance
- resistor that transforms current into light
15. how does resistance of a thermistor change in o
- temperature councils out resistance
- temperature does not affect resistance
- in hot conditions resistance drops
- in hot conditions resistance rises
16. how many volts is UK mains electricity?
