Igcse physics electricity

The heating element of an electric iron is made up of:

• copper

• nichrome

• aluminium

• iron

The electrical resistance of insulators is

• High

• Low

• Zero

• Infinitely high

An electric bulb is connected to a 220V generator. The current is 0.50 A. What is the power of the bulb?

• 440 W

• 110 W

• 55 W

• 0.0023 W

• 
• 
• 
• 

In the circuits shown, all resistors are identical

Which circuit has the least resistance?

• 
• 
• 
• 

• A

• B

• C

• D

• A

• B

• C

• D

A student sets up four circuits containing diodes.

Which of the circuits will produce a rectified current through the bulb?

• 
• 
• 
• 

What would be the reading on the voltmeter?

• 2 V

• 6 V

• 4 V

• 8 V

• A

• B

• C

• D