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  4. A straight line conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to a magnetic field of intensity 0.9 Wb/m2. The induced e.m.f. across the conductor is

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Q. A straight line conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to a magnetic field of intensity 0.9 Wb/$m^2$. The induced e.m.f. across the conductor is

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Solution:

Length of conductor (I) = 0.4 m;
Speed = 7 m/s and magnetic field (B) = 0.9 Wb/$m^2$.
Induced e.m.f. $(\in)=Blv \, \, =0.9\times0.4\times7=2.52 V$.