Electrical Hazard & Safety Features

What can be the danger caused by the action shown in the diagram? (can be more than one answer)

• electrical fire

• overheating of cables

• electric shock

• insulation of wires become damaged

The wire in a fuse will melt when the

• current is larger than the fuse rating

• current is smaller than the fuse rating

• voltage is too large

• voltage is too small

What is a suitable fuse rating for a washing machine using 6 A of current?

• 1 A

• 5 A

• 6 A

• 10 A

What is missing in the 3-pin plug?

• Live wire

• Earth wire

• Neutral wire

• Fuse

How does a circuit breaker works?

• Circuit breaker will cause the current to flow from live wire to earth.

• Circuit breaker will melt when the current is too large.

• Circuit breaker will 'trip' and cut off electricity supply when the current is too small.

• Circuit breaker will 'trip' and cut off electricity supply when the current is too large.

Why is overloading an outlet not allowed?

• It will make people stumble and hurt.

• It makes the house messy.

• It creates the risk of wire overheating and starting a fire.

• It incurs huge electricity bills from too much energy.

_________________is death or severe injury by electric shock, electric current passing through the body.

• Electrical Burn

• Fibrillation

• Electrocution

• Ventricular Fibrillation

What is a series circuit?

• The transfer of electrons from one object to another
• A circuit with a single path the current follows
• A circuit that goes in multiple directions
• A circuit that takes place in a series of events

When all parts of the circuit are connected it is a ______ circuit. 

• open
• closed

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 has more than one path to flow through