WB JEE 2023 | Current Electricity Question 8 | Physics

WB JEE 2023

MCQ (More than One Correct Answer)

-0

WB JEE 2023 Physics - Current Electricity Question 3 English

The figure shows two identical parallel plate capacitors A and B of capacitances C connected to a battery. The key K is initially closed. The switch is now opened and the free spaces between the plates of the capacitors are filled with a dielectric constant 3. Then which of the following statements is/are true?

When the switch is closed, total energy stored in the two capacitors is CV$$^2$$.

When the switch is opened, no charge is stored in the capacitor B.

When the switch is opened, energy stored in capacitor B is $$\frac{3}{2}$$CV$$^2$$.

When the switch is opened, total energy stored in two capacitors is $$\frac{5}{3}$$CV$$^2$$.

WB JEE 2022

MCQ (More than One Correct Answer)

-0

WB JEE 2022 Physics - Current Electricity Question 9 English

A hemisphere of radius R is placed in a uniform electric field E so that its axis is parallel to the field. Which of the following statement(s) is/are true?

Flux through the curved surface of hemisphere is $$\pi {R^2}E$$.

Flux through the circular surface of hemisphere is $$\pi {R^2}E$$.

Total flux enclosed is zero.

Work done in moving a point charge q from A to B via the path ACB depends upon R.

WB JEE 2019

MCQ (More than One Correct Answer)

-0

In the circuit shown in the figure all the resistance are identical and each has the value r$$\Omega $$. The equivalent resistance of the combination between the points A and B will remain unchanged even when the following pairs of points marked in the figure are connected through a resistance R.

WB JEE 2019 Physics - Current Electricity Question 29 English

WB JEE 2019 Physics - Current Electricity Question 29 English

2 and 6

3 and 6

4 and 7

4 and 6

WB JEE 2018

MCQ (More than One Correct Answer)

-0

A non-zero current passes through the galvanometer G shown in the circuit when the key K is closed and its value does not change when the key is opened. Then, which of the following statement(s) is/are true?

WB JEE 2018 Physics - Current Electricity Question 21 English

WB JEE 2018 Physics - Current Electricity Question 21 English

the galvanometer resistance is infinite.

the current through the galvanometer is 40 mA.

After the key is closed, the current through the 200$$\Omega$$ resistor is same as the current through the 300$$\Omega$$ resister.

The galvanometer resistance is 150$$\Omega$$

WB JEE Subjects