A wire in the form of a circular loop, of one turn carrying a current, produces magnetic induction B at the centre. If the same wire is looped into a coil of two turns and carrying the same current, the new value of magnetic induction at the centre is_________
A. B
B. 2B
C. 4B
D. 8B
Answer:C
A wire in the form of a circular loop, of one turn carrying a current, produces magnetic induction B at the centre. If the same wire is looped into a coil of two turns and carrying the same current, the new value of magnetic induction at the centre is_________
A. B B. 2B C. 4B D. 8B