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

What is the electric field near infinite plane sheet of charge density $$\sigma$$ ?

A
$${\sigma \over {2{\varepsilon _0}}}$$
B
$${{\sigma A} \over {2{\varepsilon _0}}}$$
C
$${\sigma \over {2{\varepsilon _0}A}}$$
D
$${\sigma \over {{\varepsilon _0}}}$$
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

Consider a thin spherical shell of radius R consisting of uniform surface charge density s. The electric field at a point of distance x from its centre and outside the shell is

A
inversely proportional to $$s$$
B
directly proportional to $$x^2$$
C
directly proportional to $$R$$
D
inversely proportional to $$x^2$$
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