The diagrams show the readings on an ammeter in a series circuit before and after the switch in the circuit has been closed.What is the current in the circuit when the switch is closed?
3.4A
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15
The component measure Potential difference (voltage)Â in the unit of ____
Volts
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The component measure ____ in the unit of Amperes
Current
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15
An electrical heater has a resistance of 21.8 ÎĐ when connected to a 240 V mains supply. Calculate the current in the heater.
11 A
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15
The Figure shows a circuit containing a battery of electromotive force (e.m.f.) 12V and a heater of resistance 6.0 ÎĐ. Calculate the current in the heater.
2.0 A
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15
The component measure _______ in the unit of Volts
Potential difference (Voltage)
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baam
Lose 15 points!
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star
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fairy
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5
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banana
Go to last place!
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15
What is the reading on the Ammeter?
4.4 A
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15
The diagram shows a reading on an ammeter. What is the reading?
5.0A
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15
The diagrams represent four copper wires. Which wire has the greatest resistance?
C
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thief
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rocket
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fairy
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5
10
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25
baam
Lose 10 points!
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15
The diagrams represent four copper wires. Which wire has the lowest resistance?
B
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15
Answer the question.
12000 A
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15
The Figure shows a circuit. The two lamps shown are identical. Each lamp has a potential difference (p.d.) of 3.0 V across it and a current of 2.0 A in it. PQ is a length of uniform metal wire. The resistance of PQ is R.
