1

JEE Main 2021 (Online) 31st August Morning Shift

Numerical

+4

-1

The electric field in an electromagnetic wave is given by E = (50 NC

The energy contained in a cylinder of volume V is 5.5 $$\times$$ 10

^{$$-$$1}) sin$$\omega$$ (t $$-$$ x/c)The energy contained in a cylinder of volume V is 5.5 $$\times$$ 10

^{$$-$$12}J. The value of V is _____________ cm^{3}. (given $$\in$$_{0}= 8.8 $$\times$$ 10^{$$-$$12}C^{2}N^{$$-$$1}m^{$$-$$2})Your input ____

2

JEE Main 2021 (Online) 27th August Evening Shift

Numerical

+4

-1

An ac circuit has an inductor and a resistor resistance R in series, such that X

_{L}= 3R. Now, a capacitor is added in series such that X_{C}= 2R. The ratio of new power factor with the old power factor of the circuit is $$\sqrt 5 :x$$. The value of x is ___________.Your input ____

3

JEE Main 2021 (Online) 27th August Morning Shift

Numerical

+4

-1

The alternating current is given by $$i = \left\{ {\sqrt {42} \sin \left( {{{2\pi } \over T}t} \right) + 10} \right\}A$$

The r.m.s. value of of this current is ................. A.

The r.m.s. value of of this current is ................. A.

Your input ____

4

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 ____

Questions Asked from Alternating Current and Electromagnetic Induction (Numerical)

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