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Question
Look at the figure given below and answer the question based on it.
Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings.
What happens to a compass at a particular point near the copper wire if the current through the circuit is increased?
Look at the figure given below and answer the question based on it.
Iron filings are sprinkled on a cardboard perpendicular to which a current carrying copper wire runs. The other components of the circuit have their usual meanings.
What happens to a compass at a particular point near the copper wire if the current through the circuit is increased?
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Solution
The correct option is A The deflection of the compass is increased
As the current through a conductor increases, the magnetic field strength produced by it at a point increases comparatively. The more the magnetic field strength at a point, the greater is the deflection of the compass needle.
The deflection of the compass is increased
As the current through a conductor increases, the magnetic field strength produced by it at a point increases comparatively. The more the magnetic field strength at a point, the greater is the deflection of the compass needle.
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