. How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases?
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ANSWER :
The decrease in deflection of the magnetic compass needle clearly shows that the magnetic field decreases as we move away from the current-carrying conductor.
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Explanation:
Place a plotting compass near the magnet and observe the deflection in the needle. Now, when we place it at some distance, we will observe that the deflection in the needle is lesser than that of the previous observation. Hence, the magnetic field strength decreases with increase in the distance
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