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4.2.5 Electrical energy and electrical power

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Question 25

The table gives data for four different electrical devices.

DeviceVoltageCurrent
USB charger5.0 V2.0 A
LED street light240 V0.15 A
High-voltage insulator leakage150 kV150\text{ kV}150 kV0.05 mA
Laptop adapter19 V3.2 A

Which device develops the least power?

A

USB charger

B

LED street light

C

High-voltage insulator leakage

D

Laptop adapter

Markscheme

4.2.5 Electrical energy and electrical power Questions

  1. IGCSE
  2. /Physics
  3. /4.2.5 Electrical energy and electrical power

69 exam-style questions on CIE IGCSE Physics 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.

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