Step-up transformers...

improve the efficiency of the national grid

reduce the voltage to a safe level for the home

Step-down transformers...

reduce the voltage to a safe level for the home

improve the efficiency of the national grid

What is wrong in this picture of a plug?

The Live and the Neutral have been swapped

The Earth and the Live have been swapped

The Neutral and the Earth have been swapped

double insulated tools are the tools which:

all metal parts are insulated form the live wire

has double wires and and ground wire

power = potential difference × current

power = potential difference / current

power = current squared × resistance

power = current squared / resistance

energy transferred = power × time

energy transferred = power / time

energy transferred = time / power

What is the purpose of a step up transformer

Increase p.d which decreases current, reducing energy dissipated to the surroundings

Decrease p.d which increases current, reducing energy dissipated to the surroundings

Increases p.d which increases current, reducing energy dissipated to the surroundings

Decrease p.d which decreases current, reducing energy dissipated to the surroundings

What is the purpose of a fuse

When the current is too high, it melts and breaks the circuit

When the current is the same as the fuse rating it breaks the fuse

When the potential difference is greater than the current it melts the fuse

P5 Electricity in the home

Authored by J Field

Physics

10th - 11th Grade

NGSS covered

Used 91+ times

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46 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The type of current where charges flow in one direction

Direct Current

Alternating Current

Electron Flow

Voltage

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The type of current where flow of charge changes direction

Alternating Current

Direct Current

Voltage

Switchback Current

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What colour is the neutral wire in a three pin plug

Red

Blue

Green and yellow

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What colour is the earth wire in a three pin plug

Red

Blue

Green and yellow

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What colour is the live wire in a three pin plug?

Red

Blue

Green and yellow

Brown

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the live wire in a three pin plug?

To provide a return path for the current to the power station

To provide a return path for the current to the earth in case of electrical fault

To provide the electric current to the device

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the neutral wire in a three pin plug?

To provide a return path for the current to the power station

To provide a return path for the current to the earth in case of electrical fault

To provide the electric current to the device

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P5 Electricity in the home

The type of current where charges flow in one direction

The type of current where flow of charge changes direction

What colour is the neutral wire in a three pin plug

What colour is the earth wire in a three pin plug

What colour is the live wire in a three pin plug?

What is the purpose of the live wire in a three pin plug?

What is the purpose of the neutral wire in a three pin plug?

What is the purpose of the earth wire in a three pin plug?

Which of the following labels correctly identifies the Cable Grip on the diagram of a UK electrical plug?

Which of the following labels correctly identifies the Outer Insulation on the diagram of a UK electrical plug?

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