A circular coil carrying a certain current produces a magnetic field 
at its centre. The coil is now rewound so as to have 3 turns and the same current is passed through it. The new magnetic field at the centre is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
for 1 turn.
For rewinding the coil in three turns, new radius 
, number of turns 
.
New magnetic field 
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