Q.1
The magnitude of the e.m.f. induced in a conductor is proportional to
  • the change in the flux
  • the rate of change of flux
  • the change in the field strength
  • the rate of change of field strength
Q.2
Magnetic flux is measured in
  • teslas
  • coulombs
  • webers
  • farads
Q.3
There are several ways to induce an e.m.f. in a conductor. Which one of these will not work?
  • Move a wire around a magnet
  • Place a strong magnet next to a coil
  • Increase the strength of a magnetic field near a coil
  • Move a magnet in and out of a coil
Q.4
Eight dipoles of charges of magnitude are placed inside a cube. The total electric flux coming out of the cube will be
  • 0
  • $\frac{8e}{\in_0}$
  • $\frac{16e}{\in_0}$
  • $\frac{e}{\in_0}$
Q.5
An electric dipole is put in north-south direction in a sphere filled with water. Which statement is correct
  • Electric flux is coming towards sphere
  • Electric flux is coming out of sphere
  • Electric flux entering into sphere and leaving the sphere are same
  • Water does not permit electric flux to enter into sphere
Q.6
The electric intensity due to an infinite cylinder of radius R and having charge q per unit length at a distance r (r>R) from its axis is
  • Directly proportional to r2r^2r2
  • Directly proportional to r
  • Inversely proportional to r
  • Inversely proportional to r2r^2r2
Q.7
An electric charge is placed at the center of a cube of side 'a' . The electric flux on one of its faces will be
  • zero
  • $\frac{q}{6\in_0}$
  • $\frac{q}{\in_0}$
  • $\frac{q}{\in_0a^2}$
Q.8
Two infinite plane parallel sheets separated by a distance 'd' have equal and opposite uniform charge densities σ . Electric field at a point between the sheets is
  • Zero
  • Depends upon the location of the point
  • $\frac{\sigma}{2\in_0}$
  • $\frac{\sigma}{\in_0}$
Q.9
Linear charge density $\lambda=\frac{q}{L}$ is used for example in:
  • plates or surfaces
  • wires
  • spheres
  • All of above
0 h : 0 m : 1 s