S2 Electricity

What is required for an electrical circuit to be considered operational?

• A continuous loop of insulating material

• A single component like a bulb

• A continuous loop of conducting material

• No wires connected

What happens to the brightness of bulbs in a series circuit when more bulbs are added?

• The bulbs become brighter

• The bulbs become dimmer

• The bulbs change color

• The bulbs turn off

What should be done first when drawing a circuit diagram?

• Draw all the wires

• Label the components

• Draw the circuit symbols first

• Connect the components randomly

What happens in a series circuit if a lamp breaks or a component is disconnected?

• The circuit continues to work without any issue

• Only the broken component stops working

• The circuit is broken and all components stop working

• The circuit becomes a parallel circuit

What happens to the lamps in a parallel circuit if one lamp breaks?

• A) All lamps will stop working.

• B) Only the broken lamp stops working, others keep working.

• C) The circuit will short circuit.

• D) The brightness of other lamps increases.

How is current measured in an electrical circuit?

• A) In volts

• B) In watts

• C) In amperes

• D) In ohms

Where must an ammeter be connected in a circuit to measure current?

• A) In parallel with the component

• B) In series with the component

• C) It does not need to be connected

• D) Across the power source

What is the behavior of current in a series circuit?

• A) It varies depending on the component

• B) It is zero

• C) It is the same everywhere in the circuit

• D) It increases with each component added

What device is used to measure potential difference in a circuit?

• A) Ammeter

• B) Voltmeter

• C) Wattmeter

• D) Ohmmeter

How should a voltmeter be connected to measure potential difference?

• A) In series with the component

• B) In parallel with the component

• C) Directly to the power source

• D) It does not need to be connected