Curriculum
Course: Igcse Physics
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Curriculum

Igcse Physics

1. Motion, Forces and Energy

0/161 Dr Dabour Hub Science Diagram and Course Material

2. Thermal Physics

0/75 Dr Dabour Hub Science Diagram and Course Material

3. Waves

0/77 Dr Dabour Hub Science Diagram and Course Material

4. Electricity and Magnetism

0/119 Dr Dabour Hub Science Diagram and Course Material

5. Nuclear Physics

0/39 Dr Dabour Hub Science Diagram and Course Material

6. Space Physics

0/47 Dr Dabour Hub Science Diagram and Course Material
Quiz

4.2.12 Electrical Power – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The watt is equivalent to
1 J s
1 J s−1
1 A V−1
1 V C
2.
The power of a 12 V device carrying 3.0 A is
36 W
4.0 W
0.25 W
15 W
3.
A 2.0 kW heater on 230 V takes a current of about
0.0087 A
460 A
2.0 A
8.7 A
4.
A 5.0 Ω resistor has a current of 2.0 A. The power is
10 W
50 W
20 W
2.5 W
5.
Which fuse is best for a device taking 4.0 A, with fuses of 3 A, 5 A and 13 A?
3 A
5 A
13 A
none
6.
Power in transmission cables is lowered by sending a
high voltage and low current
low voltage and high current
low voltage and low current
high voltage and high current
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Part of 4. Electricity and Magnetism — see every lesson and quiz in this unit.
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