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Electric Flux
Quiz 2
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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}∈08e
0
16e∈0\frac{16e}{\in_0}∈016e
e∈0\frac{e}{\in_0}∈0e
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∈0q
q∈0\frac{q}{\in_0}∈0q
q∈0a2\frac{q}{\in_0a^2}∈0a2q
zero
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