Cambridge IGCSE Physics practice
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At a glance
MCQ
Type
cambridge_mcq
Style
Topic
Magnetic effect of a current
Exam-style question
What is the effect of increasing the current in a wire on its magnetic field?.
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Question 1 of 5
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Description
A straight wire carries an electric current. The magnetic field around the wire can be observed using iron filings or a magnetic compass.
State how the strength of the magnetic field varies with distance from the wire.
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