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Physics
Physics
Problem
Identify the correct expression for the magnitude of the emf induced between the ends of a straight conductor of length
ℓ
\ell
ℓ
moving with uniform speed
v
v
v
perpendicular to a uniform magnetic field of magnitude
B
B
B
. a)
2
B
ℓ
v
2B\ell v
2
B
ℓ
v
b)
B
ℓ
v
B\ell v
B
ℓ
v
c)
−
B
ℓ
v
-\!B\ell v
−
B
ℓ
v
d)
1
2
B
ℓ
v
\dfrac{1}{2}B\ell v
2
1
B
ℓ
v
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