Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The force between two electric point charges at rest in air is $$F_1$$ When the same arrangement is kept inside water, the force between them is $$F_2$$. Which of the following statement is correct?

A
$$F_2=0$$
B
$$F_2>F_1$$
C
$$F_2=F_1$$
D
$$F_2< F_1$$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following diagram represents the variation of the electric field with distance r from the centre of a uniformly charged non-conducting sphere of radius R?

A
COMEDK 2022 Physics - Electrostatics Question 26 English Option 1
B
COMEDK 2022 Physics - Electrostatics Question 26 English Option 2
C
COMEDK 2022 Physics - Electrostatics Question 26 English Option 3
D
COMEDK 2022 Physics - Electrostatics Question 26 English Option 4
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Charge on electron is

A
3.2 $$\times$$ $$10^{-19}$$ C
B
1.6 $$\times$$ $$10^{-19}$$ C
C
$$-1.6$$ $$\times$$ $$10^{-19}$$ C
D
$$-3.2$$ $$\times$$ $$10^{-19}$$ C
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Two charged spheres of $$-20\mu$$C and $$60\mu$$C are kept at a certain distance. They are touched and kept again at the same distance. What is the ratio of force experienced before and after?

A
1 : 3
B
3 : 1
C
2 : 1
D
1 : 2
COMEDK Subjects