Quiz about IGCSE Review - Electricity

Question 1

Which component matches this symbol?

Accepted Answer

Variable resistor

Answer

LDR

Answer

Fuse

Answer

Cell

Question 2

Which component matches this symbol?

Accepted Answer

LED

Answer

LDR

Answer

Diode

Answer

Bulb

Question 3

Which component matches this symbol?

Accepted Answer

thermistor

Answer

fuse

Answer

LDR

Answer

LED

Question 4

Which of these 4 circuits can be used to measure how the current varies with a change in voltage across a bulb?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 5

Which component has the following characteristic graph - showing how the current varies as the voltage is changed?

Accepted Answer

bulb

Answer

fuse

Answer

resistor

Answer

diode

Question 6

Which component has the following characteristic graph - showing how the current varies as the voltage is changed?

Accepted Answer

resistor

Answer

bulb

Answer

diode

Answer

LDR

Question 7

Which component has the following characteristic graph - showing how the current varies as the voltage is changed?

Accepted Answer

diode

Answer

bulb

Answer

resistor

Answer

cell

Question 8

Which of these answers gives the correct way of connecting each meter?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 9

What is the correct name for the unit for measuring resistance?

Accepted Answer

ohm

Answer

amp

Answer

volt

Answer

coulomb

Question 10

Which type of circuit is more suitable for the following 2 applications:

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 11

To get a large current to flow in a wire, you can either

Accepted Answer

decrease the wire resistance or increase the supply voltage

Answer

increase the wire resistance or increase the supply voltage

Answer

increase the wire resistance or decrease the supply voltage

Answer

decrease the wire resistance or decrease the supply voltage

Question 12

Which of these answers gives the correct change in resistance for each component?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 13

The safety device that limits the current flow in a plug is the

Accepted Answer

fuse

Answer

cable grip

Answer

earth wire

Answer

insulation

Question 14

Where should the earth wire be connected inside a metal toaster?

Accepted Answer

metal casing

Answer

power supply

Answer

heating element

Answer

Earth wire not needed in a metal appliance

Question 15

This table describes electrical properties of parts of a mains plug. Which answer is correct?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 16

This hair dryer has a case made of plastic. It only needs 2 wires for safe use, and does not need an earth wire. Devices like this are called

Accepted Answer

double insulated

Answer

neutral devices

Answer

safety checked

Answer

current controlled

Question 17

When a current passes through a resistance wire it gets hot. Which of these appliances does NOT use this effect?

Accepted Answer

Microwave

Answer

Toaster

Answer

Hairdryer

Answer

Kettle

Question 18

Which of these is the correct formula for electrical power?

Accepted Answer

P = IV

Answer

V = IR

Answer

V = PI

Answer

P = V/I

Question 19

A 240 volt, 3 amp heater is left running for 5 minutes.

Which of these gives the total energy output?

Accepted Answer

216 kJ

Answer

3.6 kJ

Answer

72 kJ

Answer

0.9 kJ

Question 20

Which of the following is the correct unit for charge?

Accepted Answer

coulomb

Answer

capacitance

Answer

current

Answer

charge

Question 21

A 6 V light bulb is switched on for a short time. A 6 V battery transfers 2 C of charge to the bulb in this time. What energy has been transferred?

Accepted Answer

12 J

Answer

0.33 J

Answer

3 J

Answer

6 J

Question 22

Which of the following is the definition of a 'volt'?

Accepted Answer

a joule per coulomb

Answer

a watt per coulomb

Answer

a joule per amp

Answer

a watt per ohm

IGCSE Review - Electricity

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