Q.1
The electric field lines passing through a surface area are called:
  • Electric Field
  • Electric Flux
  • Electric Charge
  • Electric Lines
Q.2
Faraday’s law states that an induced emf is proportional to
  • The rate of change of the magnetic field
  • the rate of change of the electric field
  • the rate of change of the magnetic flux
  • the rate of change of the electric flux
Q.3
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.4
Magnetic flux is measured in
  • teslas
  • coulombs
  • webers
  • farads
Q.5
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.6
Eight dipoles of charges of magnitude are placed inside a cube. The total electric flux coming out of the cube will be
  • 8e∈0\frac{8e}{\in_0}∈0​8e​
  • 0
  • 16e∈0\frac{16e}{\in_0}∈0​16e​
  • e∈0\frac{e}{\in_0}∈0​e​
Q.7
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.8
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.9
An electric charge is placed at the center of a cube of side 'a' . The electric flux on one of its faces will be
  • q6∈0\frac{q}{6\in_0}6∈0​q​
  • q∈0\frac{q}{\in_0}∈0​q​
  • q∈0a2\frac{q}{\in_0a^2}∈0​a2q​
  • zero
0 h : 0 m : 1 s