A square loop of 40turns is placed in a uniform magnetic field perpendicular to the magnetic lines. The strength of the magnetic field is 0.5 T and the side of the loop is 0.4 m. What is the area of this square loop? b. What is the magnetic flux? * c How much induced voltage is created if it is notated in 0.20s? *
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Answer:
Correct option is
D
0.1mJ
Area = 2.5×10
−3
Side of square = a=0.05m
The frame is pulled out in 1 s
Velocity =
dt
dx
=
1s
a
=0.05m/s
By faraday's law
ϵ=−
dt
dϕ
=−
dt
dN(2.5×10
−3
)0.4
=0.1V
Resistance = 100 Ω
Work done =
R
ϵ
2
=0.1mJ
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