In a simple series circuit, why does the bulb light when you close the switch?
Because the switch produces electricity .
Because closing the switch completes the circuit.
Because closing the switch breaks the circuit.
Because voltage flows through the circuit.
A simple series circuit consists of one 1.5V battery, wires and one bulb. When the1.5V battery is replaced with a 3V battery:
the bulb glows brighter.
the bulb glows with the same level of brightness.
the bulb glows dimmer
the bulb "blows" and the circuit will no longer work.
A material that lets electricity pass through it is called:
an electrical conductor
an electrical inductor
an electrical insulator
an electrical appliance
Which of the following materials is NOT an electrical conductor?
gold
copper
carbon
phosphorus
Which of the following materials is an electrical insulator?
lead
brass
rubber
aluminium
In which circuit will the bulb or bulbs glow brightest?
A simple series circuit with one bulb and one battery
A simple circuit with one bulb and two batteries.
A simple series circuit with two bulbs and one battery
A simple circuit with one battery and two bulbs in parallel.
Why is a bulb brighter when it is powered by two batteries in series rather than by just one battery?
Because the flow of electric current in the circuit is less.
Because the flow of electric current in the circuit is greater.
Because the flow of voltage in the circuit is greater.
Because the total voltage across the circuit is less.
