Current Electricity Continued

Question 0

State the equation for energy

Answer 0

E=QV

Question 1

State the equation for power

Answer 1

P=E/T

Question 2

What is two way switching?

Answer 2

When a circuit uses single pole, double throw switching and has two possible points where you can turn it on and off

Question 3

What are the three wires in a 3 pin plug

Answer 3

Live wire, neutral wire and earth wire

Question 4

What colour is the live wire?

Answer 4

Brown

Question 5

What colour is the neutral wire?

Answer 5

Blue

Question 6

What colour is the earth wire?

Answer 6

Yellow and green stripes

Question 7

How does the fuse and earth wire protect us from getting electrocuted?

Answer 7

The earth wire provides a low resistance path to the earth, a large current flows and melts the fuse and creates a gap between the device and mains connection, stopping current.

Question 8

What does a circuit breaker (RCD) do?

Answer 8

Compares the current flowing in the live wire and neutral wire, and if they are not the same, the circuit breaker makes a gap in the circuit

Question 9

What is double insulation?

Answer 9

It is two layers of insulation between the user and the live wire