88. Which of the following converts mechanical energy into
electrical energy ?
(1) Motor
(2) Battery
(3) Generator
(4) Switch
89. The value of magnetic flux density which is uniform is
2T, what is the flux passing through a surface of area 0.5
m² perpendicular to it?
(1) 1 Weber
(2) 10 Weber
(3) 1.25 Weber
(4) 0.25 Weber
90. A 10 N force acts on a rectangular conductor of 5 cm long
placed perpendicular to a magnetic filed. If the current in
conductor is 50 A, then B
(1) 0.4 tesla
(2) 2.5 tesla
(3) 25 tesla
(4) 4 tesla
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chalo na janu tujhe patna ghuma de
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