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Electric Potential Difference and Electric Current
SNC1P Findlay University level theoretical questions
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Rank the circuits illustrated according to the brightness of the identical bulbs, from brightest to dimmest. A, B, C B, A, C C, B, A Equal Brightness End
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What happens to the brightness of bulb A when the switch is closed and bulb B lights up?
Becomes brighter Becomes dimmer Stays the same Turns off End
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In which of the circuits shown does a current exist to light the bulb?
1 2 3 4 5 End
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Is the following label on a household product cause for concern?
“Caution: This product contains tiny, electrically charged particles moving at speeds in excess of 100,000,000 kilometres per hour.” YES! NO! End
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What will happen to the brightness of identical bulbs A & B when bulb C is unscrewed?
They will go out. They will become brighter. They will become dimmer. No change. TRY IT! End
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