If the current in each wire is the same, which wire produces the strongest magnetic field?

Asked by maham237 @ 23/12/2020 in Physics viewed by 329 People

If the current in each wire is the same, which wire produces the strongest magnetic field?
-a wire that is 1mm thick and not coiled
-a wire that is 2mm thick and not coiled
-a wire that is 1-mm thick and coiled
-a wire that is 2-mm thick and coiled

Answered by maham237 @ 23/12/2020

Answer: option 4: A wire that is 2-mm thick and coiled.

Explanation:

The current in each wire is same. The magnetic field due to a current carrying wire increases if the wire is coiled with the more number of turns. A thick wire would cause low resistance to the current. Hence, a 2-mm thick wire which is coiled would produce the strongest magnetic field.

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