Series and parallel circuits KS3

What happens in a series circuit if one component breaks?

• Only the broken component stops working

• All components stop working

• The circuit becomes a parallel circuit

• The remaining components work harder to compensate

How are components added in a parallel circuit?

• Directly to the cell

• In their own separate loops

• They are not added; parallel circuits cannot have more than one component

• In the same loop of wire

What is the advantage of a parallel circuit over a series circuit?

• Components in parallel circuits last longer

• It is easier to assemble

• If one component breaks, the others still work

• It uses less electricity

How is current measured in a circuit?

• Using a voltmeter

• Using an ammeter placed in series

• With a resistor

• Current cannot be measured in a series circuit

In a parallel circuit, with two branches of equal components, if the total current is 4 amps, what is the current through each branch?

• 4 amps

• 2 amps

• 8 amps

• 1 amp

What happens to the potential difference in a series circuit with two identical components?

• It is shared equally between the components

• It is halved in each component

• It doubles in the second component

• It is the same across both components

What happens to the potential difference in a parallel circuit across each component?

• It is zero

• It decreases with each additional branch

• It is the same as the potential difference across the cell

• It varies depending on the component

In a series circuit, if the total potential difference provided by the cell is 6 volts and there are two lamps, what is the potential difference across each lamp?

• 6 volts

• 12 volts

• 3 volts

• 1.5 volts

What is the role of an ammeter in a circuit?

• To measure current

• To measure resistance

• To control the flow of current

• To measure voltage

What is the effect of adding a switch in each branch of a parallel circuit?

• It converts the circuit into a series circuit

• It allows control over which components are on or off

• It decreases the potential difference

• It increases the total current