Electrical energy - JSS3 Basic science Past Questions and Answers - page 1
In which direction do electrons flow in a circuit?
From positive to negative
From negative to positive
They do not flow
Both directions simultaneously
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What drives the flow of electrons in a circuit?
Magnetic field
Magnetic field
Gravitational force
Friction
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In a series circuit, how many paths exist for the current to flow?
One
Two
Three or more
It depends
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What happens if one component fails in a series circuit?
Current continues to flow normally
The circuit is broken, and no current can flow
Voltage increases
Resistance decreases
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In a parallel circuit, how many paths exist for the current to flow?
One
Two
Three or more
It depends
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What happens if one component fails in a parallel circuit?
Current continues to flow normally
The circuit is broken, and no current can flow
Voltage increases
Resistance decreases
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How is total resistance calculated in a series circuit?
By multiplying individual resistances
By adding individual resistances
By dividing individual resistances
By subtracting individual resistances
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How is total resistance calculated in a parallel circuit?
By multiplying individual resistances
By adding individual resistances
By dividing individual resistances
By subtracting individual resistances
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Which type of circuit offers redundancy, allowing continued operation if one component fails?
Series circuit
Parallel circuit
Both
Neither
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Which type of circuit has a total resistance equal to the sum of the individual resistances?
Series circuit
Parallel circuit
Both
Neither
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