Part of an electric circuit is shown.
What is the current shown by the ammeter?
3 A
4 A
5 A
6 A
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Part of an electric circuit is shown.
What is the current shown by the ammeter?
3 A
4 A
5 A
6 A
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Which of the following graphs shows how the current varies with potential difference for a filament lamp?
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Two resistors are connected in parallel and the current in one of them is 2.0 A, as shown.
Which of the following is the current in ampere?
3.0
4.0
5.0
6.0
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Which of the following is the total resistance of the resistors in parallel?
20 Ω
40 Ω
90 Ω
180 Ω
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A circuit consists of three identical 1.5 V bulbs connected to two 1.5 V cells.
The switch is closed.
Which row describes the change in brightness of bulb Y and bulb Z?
Y | Z | |
A | brighter | brighter |
B | brighter | dimmer |
C | dimmer | brighter |
D | dimmer | dimmer |
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