Series and Parallel

Study the circuit diagram carefully.

Which switch, when open, will cause the bulb to stop glowing?

• 1

• 2

• 3

• 4

Which of the following is the correct circuit diagram for the circuit picture here?

• 
• 
• 
• 

As you continue to add lightbulbs in series, what happens?

• The bulbs get brighter

• The bulbs get dimmer

• The bulbs remain the same brightness

• The bulbs explode and shards of glass get everywhere

If one bulb goes out in a series circuit, the remaining bulbs...

• also go out

• get brighter

• get dimmer

• explode, leaving shards of glass everywhere

This circuit has more than one loop. When one light goes out, the others stay on. 

• closed circuit
• series circuit
• parallel circuit
• open circuit

The picture shows an electrical circuit. This circuit is a series circuit because:

• It has 3 light bulbs.

• The same current flows through all three light bulbs.

• It uses a single battery.

• The electrical current is divided between the three light bulbs.

A parallel circuit __________

• has only one path for current to travel

• has more than one path for current to travel

• does not allow electricity to travel through it

• has magnets that cause electric current

SI unit of voltage is ______

• ampere

• metre

• ohm

• volt

What 'flows' in a wire?

• Protons
• Neutrons
• Atoms
• Electrons

What happens to other bulbs if one of the bulbs blows?

• they will glow brighter

• they will stop working because the circuit will be broken

• they will explode

• they will keep glowing with the same brightness