Electricity Revision Quiz

Which component matches this symbol?

• LDR

• Fuse

• Cell

• Variable resistor

Which component matches this symbol?

• LDR

• LED

• Diode

• Bulb

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

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

What is the current through the resistor?

• 2 mA

• 2 A

• 16 mA

• 16 A

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

• A

• B

• C

• D

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

• increase the wire resistance or increase the supply voltage

• increase the wire resistance or decrease the supply voltage

• decrease the wire resistance or increase the supply voltage

• decrease the wire resistance or decrease the supply voltage