JEE Main 2022 (Online) 24th June Morning Shift | Alternating Current and Electromagnetic Induction Question 84 | Physics

JEE Main 2022 (Online) 24th June Morning Shift

Numerical

-1

As shown in the figure an inductor of inductance 200 mH is connected to an AC source of emf 220 V and frequency 50 Hz. The instantaneous voltage of the source is 0 V when the peak value of current is $${{\sqrt a } \over \pi }$$ A. The value of $$a$$ is ___________.

JEE Main 2022 (Online) 24th June Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 60 English

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JEE Main 2021 (Online) 31st August Evening Shift

Numerical

-1

At very high frequencies, the effective impendence of the given circuit will be ________________ $$\Omega$$.

JEE Main 2021 (Online) 31st August Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 85 English

JEE Main 2021 (Online) 31st August Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 85 English

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JEE Main 2021 (Online) 31st August Morning Shift

Numerical

-1

The electric field in an electromagnetic wave is given by E = (50 NC^$$-$$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 _____________ cm³. (given $$\in$$₀ = 8.8 $$\times$$ 10^$$-$$12C²N^$$-$$1m^$$-$$2)

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JEE Main 2021 (Online) 27th August Evening Shift

Numerical

-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 ___________.

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