What is the current at point P in the circuit?
0.5 A
7.5 A
15.0 A
20.5 A
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3.3 Series & Parallel Circuits
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3.3 Series & Parallel Circuits
What is the current at point P in the circuit?
0.5 A
7.5 A
15.0 A
20.5 A
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Which voltage is the maximum voltage made when four 1.5 V cells are connected in series?
0 V
1.5 V
3.0 V
6.0 V
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This is a circuit.
Which letter A, B, C or D shows the part of the circuit that carries a current of 2A?
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A student has 3 identical resistors. She arranges them in four different ways.
Which arrangement has the most resistance?
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The table shows the current and potential difference for four different lamps.
Which lamp has the highest power?
Use the equation: power = potential difference × current
Current (A) | Potential difference (V) | |
A | 2 | 5 |
B | 3 | 4 |
C | 4 | 2 |
D | 5 | 1 |
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Which item uses the most power?
Use the equation: power = potential difference × current
Item | Current (A) | Potential difference (V) | |
A | Calculator | 0.1 | 3 |
B | Mobile Phone | 1.0 | 5 |
C | Radio | 0.5 | 12 |
D | Torch | 1.2 | 6 |
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The current in a 12 Ω resistor is 9.0 A.
How much power is dissipated?
108 W
972 W
1 296 W
11 664 W
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Calculate the power dissipated by resistor R.
3 W
12 W
15 W
30 W
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