Electricity

Question 1

What is the difference between a series circuit and a parallel circuit?

Answer 1

A series is one complete loop whilst a parallel has branches it splits into.

Question 2

What is the effect of adding more bulbs or cells to a series circuit

Answer 2

More bulbs- each one gets dimmer as they have to share the current

More cells- each bulb gets brighter

Question 3

What is the effect of adding more bulbs to a parallel circuit?

Answer 3

The bulbs will be equally bright and stay the same

Question 4

What is current?

Answer 4

The rate at which electrical charge is flowing

Question 5

What is voltage?

Answer 5

The amount of energy the cell gives to each electron is given to move around the circuit.

Question 6

How does Voltage behave in series

Answer 6

The voltage throughout each component adds up to the voltage of the battery

Question 7

How does current behave in series

Answer 7

The same throughout the whole circuit

Question 8

For a series circuit with a 6V battery with a 2A current connected to 2 identical bulbs, describe the:
• Voltage across each bulb
• Current through each bulb

Answer 8

• Voltage - 3V across each bulb

* Current - 2A at all points

Question 9

How does a fuse keep us safe

Answer 9

It keeps the current at a stable level and helps prevent fires. It melts when too much current flows and breaks the circuit.