The magnetic field at the center of a current-carrying circular loop is B. If the radius of the loop is doubled, keeping the current as same the magnetic field at the center of the loop would be
A. B
B. \(\frac{B}{2}\)
C. \(\frac{B}{4}\)
D. 2B
Answer:B
The magnetic field at the center of a current-carrying circular loop is B. If the radius of the loop is doubled, keeping the current as same the magnetic field at the center of the loop would be
A. B B. \(\frac{B}{2}\) C. \(\frac{B}{4}\) D. 2B