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List of top Physics Questions on Electromagnetic induction asked in WBJEE
Two straight conducting plates form an angle θ where their ends are joined. A conducting bar in contact with the plates and forming an isosceles triangle with them, starts at the vertex at time t = 0 and moves with constant velocity v to the right as shown in the figure. A magnetic field B points out of the page. The magnitude of emf induced at t = 1 second will be:
WBJEE - 2024
WBJEE
Physics
Electromagnetic induction
An amount of charge Q passes through a coil of resistance R.If the current in the coil decreases to zero at a uniform rate during time T, then the amount of heat generated in the coil will be,
WBJEE - 2023
WBJEE
Physics
Electromagnetic induction
A circular coil is placed near a current-carrying conductor, both lying on the plane of the paper. The current is flowing through the conductor in such a way that the induced current in the loop is clockwise as shown in the figure. The current in the wire
WBJEE - 2023
WBJEE
Physics
Electromagnetic induction
In a closed circuit there is only a coil of inductance $L$ and resistance $100\ \Omega$. The coil is situated in a uniform magnetic field. All of a sudden, the magnetic flux linked with the circuit changes by $5$ Weber. What amount of charge will flow in the circuit as a result?
WBJEE - 2022
WBJEE
Physics
Electromagnetic induction
As shown in the figure, a rectangular loop of length $a$ and width $b$ and made of a conducting material of uniform cross-section is kept in a horizontal plane where a uniform magnetic field of intensity $B$ is acting vertically downward. The resistance per unit length of the loop is $\lambda \, \Omega / m$. If the loop is pulled with uniform velocity $v$ in a horizontal direction, which of the following statement(s) is/are true?
WBJEE - 2022
WBJEE
Physics
Electromagnetic induction
The magnetic flux linked with a coil satisfies the relation
$\phi= (4t^2 + 6t + 9) Wb$
, where
$t$
is the time in second. The e.m.f. induced in the coil at
$t\, =\, 2$
second is
WBJEE - 2012
WBJEE
Physics
Electromagnetic induction
Which of the following materials is the best conductor of electricity?
WBJEE - 2009
WBJEE
Physics
Electromagnetic induction