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

4.2.6 Direct and Alternating Current – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which source supplies direct current?
Mains socket
Power station generator
Transformer
Battery
2.
The graph of a.c. voltage against time is
a horizontal line
a straight sloping line
a sine wave
a series of steps only above zero
3.
A 50 Hz supply has a period of
0.50 s
0.02 s
50 s
5.0 s
4.
The mains frequency is 60 Hz. How many times does the current reverse in one second?
120
60
30
240
5.
Which device only works on d.c.?
Filament lamp
Electric heater
Kettle
Electronic circuit with a transistor
6.
A d.c. supply is displayed on an oscilloscope as
a sine wave
a vertical line
a horizontal line
a zigzag
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Part of 4. Electricity and Magnetism — see every lesson and quiz in this unit.
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