21. A conductor 4 m long lies along x-axis with a current of 10.0 A in the $${\hat i}$$ direction. The force on this conductor due to a magnetic field $$B = 0.05\hat kT$$ is
22. The value of $$\oint {D\ell } $$ along a circle of radius 2 unit is
23. Which of the following is not Maxwell's equation for static electromagnetic field in isotropic and homogenous medium?
24. A copper rod of length L is rotated about one end perpendicular to the uniform magnetic field B with constant angular velocity ω. The induced emf between the two end is
25. Consider a closed surface S surrounding a volume V. If \[\overrightarrow r \] is the position vector of a point inside S, with \[{\hat n}\] the unit normal on s, the value of the integral \[\mathop{{\int\!\!\!\!\!\int}\mkern-21mu \bigcirc}\limits_S
{5\overrightarrow r .\hat ndS} \] is
26. Which of the following represents Maxwell's divergence equation for static electric field?
27. The depth of penetration is the depth in which electromagnetic wave has been attenuated to
28. Poisson's equation for inhomogeneous medium is:
29. A Geostationary satellite completes one orbit in
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