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Physics
Physics
Problem
Which expression gives the maximum (peak) magnitude of the emf induced in a coil of
N
N
N
turns and area
A
A
A
rotating with uniform angular speed
ω
\omega
ω
in a uniform magnetic field of flux density
B
B
B
? a)
2
N
B
A
ω
2 N B A \omega
2
N
B
A
ω
b)
N
B
A
ω
sin
ω
t
N B A \omega \sin \omega t
N
B
A
ω
sin
ω
t
c)
N
B
A
ω
N B A \omega
N
B
A
ω
d)
N
B
A
ω
2
\dfrac{N B A \omega}{\sqrt{2}}
2
N
B
A
ω
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