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
What drives the flow of electrons in a circuit?
Magnetic field
Magnetic field
Gravitational force
Friction
In a series circuit, how many paths exist for the current to flow?
One
Two
Three or more
It depends
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
In a parallel circuit, how many paths exist for the current to flow?
One
Two
Three or more
It depends
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
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
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
Which type of circuit offers redundancy, allowing continued operation if one component fails?
Series circuit
Parallel circuit
Both
Neither
Which type of circuit has a total resistance equal to the sum of the individual resistances?
Series circuit
Parallel circuit
Both
Neither