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

4.4.5 Investigating the Field Around a Wire – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
The iron filings round a vertical current-carrying wire form
concentric circles
straight lines
spirals
random patterns
2.
The direction of the compass needle at a point shows the
direction of the current
position of the south pole
size of the current
direction of the field at that point
3.
To show the field strength is greater closer to the wire, the filings are
spread more widely
closer together near the wire
absent near the wire
arranged in straight rows
4.
A reading of 0.20 mT is taken at 2.0 A. At 5.0 A and the same position it would be about
0.08 mT
1.0 mT
0.50 mT
2.0 mT
5.
Why use short bursts of a large current?
The compass needs time to settle
Filings only move at low current
The wire may overheat
The field takes time to form
6.
What reduces the effect of the Earth's magnetic field?
Using a large current
Using a small current
Using a longer wire
Using a weaker compass
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Part of 4. Electricity and Magnetism — see every lesson and quiz in this unit.
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