1

JEE Main 2021 (Online) 27th July Evening Shift

Numerical

+4

-1

In the given figure the magnetic flux through the loop increases according to the relation $$\phi$$

The magnitude of current through R = 2$$\Omega$$ resistor at t = 5 s is ___________ mA.

_{B}(t) = 10t^{2}+ 20t, where $$\phi$$_{B}is in milliwebers and t is in seconds.The magnitude of current through R = 2$$\Omega$$ resistor at t = 5 s is ___________ mA.

Your input ____

2

JEE Main 2021 (Online) 25th July Morning Shift

Numerical

+4

-1

A circular conducting coil of radius 1 m is being heated by the change of magnetic field $$\overrightarrow B $$ passing perpendicular to the plane in which the coil is laid. The resistance of the coil is 2 $$\mu$$$$\Omega$$. The magnetic field is slowly switched off such that its magnitude changes in time as

$$B = {4 \over \pi } \times {10^{ - 3}}T\left( {1 - {t \over {100}}} \right)$$

The energy dissipated by the coil before the magnetic field is switched off completely is E = ___________ mJ.

$$B = {4 \over \pi } \times {10^{ - 3}}T\left( {1 - {t \over {100}}} \right)$$

The energy dissipated by the coil before the magnetic field is switched off completely is E = ___________ mJ.

Your input ____

3

JEE Main 2021 (Online) 25th February Morning Shift

Numerical

+4

-1

A coil of inductance 2 H having negligible resistance is connected to a source of supply whose voltage is given by V = 3t volt. (where t is in second). If the voltage is applied when t = 0, then the energy stored in the coil after 4 s is _______J.

Your input ____

4

JEE Main 2020 (Online) 6th September Morning Slot

Numerical

+4

-0

A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1A and
it is decreasing at a rate

of 10

of 10

^{2}A s^{–1}. The value of the potential difference V_{P}– V_{Q}, (in volts) at that instant, is _________.Your input ____

Questions Asked from Electromagnetic Induction (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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