AQA A Level Physics Electricity MC

Which circuit component would give this I-V characteristic?

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How much work is done on an electron by a 5 V potential difference?

• 0.2 eV

• 8x10^-19 J

• 3.2x10^-20 J

• 5 J

A filament lamp with resistance 12 Ω is operated at a power of 36 W.

How much charge flows through the filament lamp during 15 minutes?

• 26 C

• 1.6 kC

• 2.7 kC

• 6.5 kC

An electric motor lifts a load of weight W through a vertical height h in time t.

The potential difference across the motor is V and the current through it is I.

What is the efficiency of the motor?

• 1.4A

• 1.7A

• 2.0A

• 2.4A

Calculate current at point X

• zero

• 2A

• 3A

• 6A

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D