Physics-
General
Easy
Question
A conductor 
moves along its bisector with a velocity of 
through a perpendicular magnetic field of 
, as shown in fig. If all the four sides are of 
length each, then the induced emf between points 
and 
is
- 0
- None of the above
- 0
-
-
- None of the above
The correct answer is:
There is no induced emf in the part 
and 
because they are moving along their length while emf induced between 
and 
between and can be calculated as follows
Induced emf between and 
Induced emf between and 
Related Questions to study
Physics-
A circular metal plate of radius 
is rotating with a uniform angular velocity
with its plane perpendicular to a uniform magnetic field B. Then the emf developed between the centre and the rim of the plate is
A circular metal plate of radius is rotating with a uniform angular velocitywith its plane perpendicular to a uniform magnetic field B. Then the emf developed between the centre and the rim of the plate is
Physics-General
Physics-
A coil has 1,000 turns and 500 
as its area. The plane of the coil is placed at right angles to a magnetic induction field of 
. The coil is rotated through 180
in 0.2 s. the average emf induced in the coil, in mV, is
A coil has 1,000 turns and 500 as its area. The plane of the coil is placed at right angles to a magnetic induction field of . The coil is rotated through 180in 0.2 s. the average emf induced in the coil, in mV, is
Physics-General
Physics-
A current 
is passed in first coil, which induces a maximum emf of 
in second coil. The mutual inductance between the coils is
A current is passed in first coil, which induces a maximum emf of in second coil. The mutual inductance between the coils is
Physics-General
Physics-
Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon
Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon
Physics-General
Physics-
The magnetic flux through a circuit of resistance changes by an amount 
in time 
. The total independent of quantity of electric charge 
which passes during this time through any point of the circuit is given by
The magnetic flux through a circuit of resistance changes by an amount in time . The total independent of quantity of electric charge which passes during this time through any point of the circuit is given by
Physics-General
Physics-
Two solenoids of equal number of turns have their lengths and the radii in the same ratio 1:2. The ratio of their self inductances will be
Two solenoids of equal number of turns have their lengths and the radii in the same ratio 1:2. The ratio of their self inductances will be
Physics-General
Physics-
A step-up transformer has transformation ratio of 3:2. What is the voltage in secondary if voltage in primary is 
A step-up transformer has transformation ratio of 3:2. What is the voltage in secondary if voltage in primary is
Physics-General
General
The minimum number of vectors having different planes which can be added to give zero resultant is
The minimum number of vectors having different planes which can be added to give zero resultant is
GeneralGeneral
General
If 
is a root of the equation 
then
If is a root of the equation then
GeneralGeneral
Physics-
Why the current does not rise immediately in a circuit containing inductance
Why the current does not rise immediately in a circuit containing inductance
Physics-General
Physics-
The device that does not work on the principle of mutual induction is
The device that does not work on the principle of mutual induction is
Physics-General
Physics-
A transformer is employed to
A transformer is employed to
Physics-General
Physics-
A solenoid is 
long and its inner diameter is 
. It has three layers of windings of 1000 turns each and carries a current of 
. The magnetic flux for a cross-section of the solenoid is nearly
A solenoid is long and its inner diameter is . It has three layers of windings of 1000 turns each and carries a current of . The magnetic flux for a cross-section of the solenoid is nearly
Physics-General
Physics-
The current through a
inductor is shown in the following graph. The induced emf during the time interval 
to 
will be
The current through a inductor is shown in the following graph. The induced emf during the time interval to will be
Physics-General
Physics-General
Physics-
An e.m.f. of 
is produced in a coil when the current in it changes at the rate of 
. The inductance of the coil is
An e.m.f. of is produced in a coil when the current in it changes at the rate of . The inductance of the coil is
Physics-General
