A current loop of diameter 4 cm has a current of 3 A.
a) What is the magnetic field at its center?
b) By how much would you need to decrease the diameter of the loop (while keeping the current constant) if you want to double the magnetic field at its center (double compared to a)

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Answer The magnetic field at the center of a current loop is given by the formula B0I2RB2R0I where B... View the full answer