Static electricity can be produced when two materials are rubbed together.
Which two types of material could cause static electricity to be produced?
Two insulators
Two conductors
One insulator and one conductor
A metal and a non-metal
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What conditions are needed for charge to flow?
A source of potential difference and two lamps.
A complete circuit and two lamps.
A complete circuit and a source of potential difference.
A complete circuit and a source of resistance.
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A student sets up four electrical circuits.
Identify in which circuit the lamp will light up.
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Calculate the charge flow when a current of 20 mA flows for 2000 s.
Use the equation: charge flow = current × time
40 C
100 C
40 000 C
100 000 C
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