Which statement accurately describes the strength of the magnetic field near a current-carrying wire?

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The magnetic field strength is stronger near the wire.

The magnetic field strength is the same at all distances from the wire.

The magnetic field strength is weaker near the wire.

The magnetic field strength varies unpredictably near the wire.

answer is B.

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Detailed Solution

The magnetic field strength is stronger near the wire is the correct out of these.

The magnetic field strength around a current-carrying wire is stronger near the wire itself. This phenomenon is a result of the relationship described by Ampere's Law and the Biot-Savart Law.

As you move farther away from the wire, the magnetic field strength decreases, leading to a weaker magnetic influence compared to the region closer to the wire.

This principle is important in understanding the behaviour of magnetic fields produced by current-carrying conductors.

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