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Physics
Physics
Problem
A circular coil having
N
N
N
turns and radius
r
r
r
carries a current
I
I
I
. It is held in the XZ plane in a magnetic field
B
B
B
. The torque on the coil due to the magnetic field is: a.
B
r
2
I
π
N
\frac{Br^2 I}{\pi N}
π
N
B
r
2
I
b.
B
π
r
2
I
N
B\pi r^2 I N
B
π
r
2
I
N
c.
B
π
r
2
I
N
\frac{B\pi r^2 I}{N}
N
B
π
r
2
I
d. Zero
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