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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
2
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
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Insulators can be charged by which of the following process?

A
Induction
B
Diverging
C
Friction
D
Heating
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Work done in moving a charge of 25C is 50 J. Calculate potential difference, between two points.

A
0.5 V
B
1 V
C
2 V
D
2.5 V
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