IGCSE Review - Electricity

Which component matches this symbol?

• LDR

• Fuse

• Cell

• Variable resistor

Which component matches this symbol?

• LDR

• LED

• Diode

• Bulb

Which component matches this symbol?

• fuse

• LDR

• thermistor

• LED

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

• 
• 
• 
• 

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

• bulb

• fuse

• resistor

• diode

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

• bulb

• resistor

• diode

• LDR

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

• bulb

• resistor

• diode

• cell

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

• A

• B

• C

• D

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

• amp

• volt

• coulomb

• ohm

A computer circuit board contains a 4 kΩ resistor and has a p.d. of 8 V across it.

What does p.d. stand for?

• potential difference

• potential divider

• power difference

• power divider