JEE Main 2022 (Online) 25th June Morning Shift | Current Electricity Question 72 | Physics

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

In the figure, a very large plane sheet of positive charge is shown. P₁ and P₂ are two points at distance l and 2l from the charge distribution. If $$\sigma$$ is the surface charge density, then the magnitude of electric fields E₁ and E₂ at P₁ and P₂ respectively are :

JEE Main 2022 (Online) 25th June Morning Shift Physics - Current Electricity Question 58 English

$${E_1} = \sigma /{\varepsilon _0},\,{E_2} = \sigma /2{\varepsilon _0}$$

$${E_1} = 2\sigma /{\varepsilon _0},\,{E_2} = \sigma /{\varepsilon _0}$$

$${E_1} = {E_2} = \sigma /2{\varepsilon _0}$$

$${E_1} = {E_2} = \sigma /{\varepsilon _0}$$

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

A teacher in his physics laboratory allotted an experiment to determine the resistance (G) of a galvanometer. Students took the observations for $${1 \over 3}$$ deflection in the galvanometer. Which of the below is true for measuring value of G?

$${1 \over 3}$$ deflection method cannot be used for determining the resistance of the galvanometer.

$${1 \over 3}$$ deflection method can be used and in this case the G equals to twice the value of shunt resistances.

$${1 \over 3}$$ deflection method can be used and in this case, the G equals to three times the value of shunt resistances.

$${1 \over 3}$$ deflection method can be used and in this case the G value equals to the shunt resistances.

JEE Main 2022 (Online) 24th June Evening Shift

MCQ (Single Correct Answer)

-1

What will be the most suitable combination of three resistors A = 2$$\Omega$$, B = 4$$\Omega$$, C = 6$$\Omega$$ so that $$\left( {{{22} \over 3}} \right)$$$$\Omega$$ is equivalent resistance of combination?

Parallel combination of A and C connected in series with B.

Parallel combination of A and B connected in series with C.

Series combination of A and C connected in parallel with B.

Series combination of B and C connected in parallel with A.

JEE Main 2022 (Online) 24th June Morning Shift

MCQ (Single Correct Answer)

-1

Two identical cells each of emf 1.5 V are connected in parallel across a parallel combination of two resistors each of resistance 20 $$\Omega$$. A voltmeter connected in the circuit measures 1.2 V. The internal resistance of each cell is :

2.5 $$\Omega$$

4 $$\Omega$$

5 $$\Omega$$

10 $$\Omega$$

PREVIOUS NEXT