JEE Main 2021 (Online) 1st September Evening Shift | Alternating Current and Electromagnetic Induction Question 85 | Physics

JEE Main 2021 (Online) 1st September Evening Shift

MCQ (Single Correct Answer)

-1

For the given circuit the current i through the battery when the key in closed and the steady state has been reached is __________.

JEE Main 2021 (Online) 1st September Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 87 English

JEE Main 2021 (Online) 1st September Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 87 English

6 A

25 A

10 A

0 A

JEE Main 2021 (Online) 31st August Evening Shift

MCQ (Single Correct Answer)

-1

Statement - I :

To get a steady dc output from the pulsating voltage received from a full wave rectifier we can connect a capacitor across the output parallel to the load R_L.

Statement - II :

To get a steady dc output from the pulsating voltage received from a full wave rectifier we can connect an inductor in series with R_L.

In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Both Statement I and Statement II are false

Both Statement I and Statement II are true

JEE Main 2021 (Online) 31st August Morning Shift

MCQ (Single Correct Answer)

-1

A small square loop of side 'a' and one turn is placed inside a larger square loop of side b and one turn (b >> a). The two loops are coplanar with their centres coinciding. If a current I is passed in the square loop of side 'b', then the coefficient of mutual inductance between the two loops is :

$${{{\mu _0}} \over {4\pi }}8\sqrt 2 {{{a^2}} \over b}$$

$${{{\mu _0}} \over {4\pi }}{{8\sqrt 2 } \over a}$$

$${{{\mu _0}} \over {4\pi }}8\sqrt 2 {{{b^2}} \over a}$$

$${{{\mu _0}} \over {4\pi }}{{8\sqrt 2 } \over b}$$

JEE Main 2021 (Online) 31st August Morning Shift

MCQ (Single Correct Answer)

-1

In an ac circuit, an inductor, a capacitor and a resistor are connected in series with X_L = R = X_C. Impedance of this circuit is :

2R²

Zero

R$$\sqrt 2 $$

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