Consider twocurrent-carrying circular loops. Both are made from one strand ofwir

Question

Consider twocurrent-carrying circular loops. Both are made from one strand ofwire and both carry the same current, but one has twice the radiusof the other. Compared to the magnetic field at the center of thesmaller loop, the magnetic field at the center of the larger loopis
A. 4 times stronger.
B. 2 times stronger.
C. 8 times stronger.
D. as strong as the smaller loop. Consider twocurrent-carrying circular loops. Both are made from one strand ofwire and both carry the same current, but one has twice the radiusof the other. Compared to the magnetic field at the center of thesmaller loop, the magnetic field at the center of the larger loopis
A. 4 times stronger.
B. 2 times stronger.
C. 8 times stronger.
D. as strong as the smaller loop.

Explanation / Answer

well I know it's not A. or B.

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