JEE Main 2020 (Online) 2nd September Evening Slot | Current Electricity Question 139 | Physics

JEE Main 2020 (Online) 2nd September Evening Slot

MCQ (Single Correct Answer)

-1

A small point mass carrying some positive charge on it, is released from the edge of a table. There is a uniform electric field in this region in the horizontal direction. Which of the following options then correctly describe the trajectory of the mass?
(Curves are drawn schematically and are not to scale). JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 139 English

JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 139 English

JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 139 English Option 1

JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 139 English Option 2

JEE Main 2020 (Online) 2nd September Evening Slot

MCQ (Single Correct Answer)

-1

A potentiometer wire PQ of 1 m length is connected to a standard cell E₁. Another cell E₂ of emf 1.02 V is connected with a resistance ‘r’ and switch S (as shown in figure). With switch S open, the null position is obtained at a distance of 49 cm from Q. The potential gradient in the potentiometer wire is : JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 138 English

JEE Main 2020 (Online) 2nd September Evening Slot Physics - Current Electricity Question 138 English

0.04 V/cm

0.01 V/cm

0.02 V/cm

0.03 V/cm

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $$\rho $$_C, $$\rho $$_T, $$\rho $$_M and $$\rho $$_A respectively. Then :

$$\rho $$_C > $$\rho $$_A > $$\rho $$_T

$$\rho $$_M > $$\rho $$_A > $$\rho $$_C

$$\rho $$_A > $$\rho $$_T > $$\rho $$_C

$$\rho $$_A > $$\rho $$_M > $$\rho $$_C

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The current i in the network is : JEE Main 2020 (Online) 9th January Evening Slot Physics - Current Electricity Question 143 English