1
CBSE 12th Physics (Term 1) Paper 2021-22
+0.77
-0
Assertion (A) : A negative charge in an electric field moves along the direction of the electric field.

Reason (R) : On a negative charge a force acts in the direction of the electric field.
A
Both (A) & (R) are true and (R) is correct explanation of (A).
B
Both (A) & (R) are true and (R) is not correct explanation of (A).
C
(A) is true, but (R) is false.
D
(A) is false and (R) is also false.
2
CBSE 12th Physics (Term 1) Paper 2021-22
+0.77
-0
Equipotentials at a large distance from a collection of charges whose total sum is not zero are -
A
spheres
B
planes
C
ellipsoids
D
paraboloids
3
CBSE 12th Physics (Term 1) Paper 2021-22
+0.77
-0
Four charges $$-$$q, $$-$$q, +q and +q are placed at the corners of a square of side 2 L is shown in figure. The electric potential at point A midway between the two charges +q and +q is -

A
$${1 \over {4\pi { \in _0}}}{{2q} \over L}\left( {1 - {1 \over {\sqrt 5 }}} \right)$$
B
$${1 \over {4\pi { \in _0}}}{{2q} \over L}\left( {1 + {1 \over {\sqrt 5 }}} \right)$$
C
$${1 \over {4\pi { \in _0}}}{q \over {2L}}\left( {1 - {1 \over {\sqrt 5 }}} \right)$$
D
zero
Class 12 Subjects
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
EXAM MAP
Medical
NEET