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Mathematics
Mathematics
Problem
A straight conductor of length
L
L
L
carrying current
I
I
I
is placed at right angles to a uniform magnetic field of strength
B
B
B
. Which expression gives the magnitude of the force acting on the conductor? a)
F
=
I
L
B
cos
θ
F = I L B \cos\theta
F
=
I
L
B
cos
θ
b)
F
=
1
2
I
L
B
\displaystyle F = \frac{1}{2} I L B
F
=
2
1
I
L
B
c)
F
=
I
L
B
F = I L B
F
=
I
L
B
d)
F
=
I
L
B
sin
θ
F = I L B \sin\theta
F
=
I
L
B
sin
θ
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