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Answer :
Final answer:
The magnetic field strength at a distance of 3 meters from the wire carrying a current of 2A is approximately 4×10-7T.
Explanation:
To calculate the magnetic field strength at a distance of 3 meters from the wire, we can use Ampere's Law. Ampere's Law states that the magnetic field created by a current-carrying wire is directly proportional to the current and inversely proportional to the distance from the wire.
B = μ0 * (I / 2π * r)
where B is the magnetic field, μ0 is the permeability of free space (approximately 4π×10-7 Tm/A), I is the current, and r is the distance from the wire.
Plugging in the values, we get:
B = (4π×10-7 * 2A) / (2π * 3m) = 4×10-7T.
Therefore, the magnetic field strength at a distance of 3 meters from the wire is approximately 4×10-7T.
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