Three charges are placed at the vertices of an equilateral triangle of side a as shown in the following figure. The force experienced by the charge placed at the vertex A in a direction normal to BC is: 

1. Q2/(4πϵ0a2)

2. Q2/(4πϵ0a2)

3. zero

4. Q2/(2πϵ0a2)

Subtopic:  Coulomb's Law |
 64%
From NCERT
AIIMS - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Two particles of equal mass m and charge q are placed at a distance of 16 cm. They do not experience any force. The value of qm is 

(1) l

(2) πε0G

(3) G4πε0

(4) 4πε0G

Subtopic:  Coulomb's Law |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Two identical conductors of copper and aluminium are placed in an identical electric field. The magnitude of induced charge in the aluminium will be:

1. zero.

2. greater than in copper.

3. equal to that in copper.

4. less than in copper.

Subtopic:  Electric Field |
 52%
From NCERT
AIIMS - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

ABC is an equilateral triangle. Charges +q are placed at each corner. The electric intensity at O will be 

(1) 14πε0qr2

(2) 14πε0qr

(3) Zero

(4) 14πε03qr2

Subtopic:  Electric Field |
 88%
From NCERT
PMT - 1985
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A charge particle is free to move in an electric field. It will travel 

(1) Always along a line of force

(2) Along a line of force, if its initial velocity is zero

(3) Along a line of force, if it has some initial velocity in the direction of an acute angle with the line of force

(4) None of the above

Subtopic:  Electric Field |
 51%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

An uncharged sphere of metal is placed in between two charged plates as shown. The lines of force look like 

(1) A

(2) B

(3) C

(4) D

Subtopic:  Electric Field |
 83%
From NCERT
PMT - 1985
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

An electron enters an electric field with its velocity in the direction of the electric lines of force. Then 

(1) The path of the electron will be a circle

(2) The path of the electron will be a parabola

(3) The velocity of the electron will decrease

(4) The velocity of the electron will increase

Subtopic:  Electric Field |
 60%
From NCERT
PMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The dimension of (1/2) ε0E2  (ε0: permittivity of free space; E: electric field) is

(1) MLT–1

(2) ML2L–2

(3) ML–1T–2

(4) ML2T–1

Subtopic:  Coulomb's Law | Electric Field |
 74%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

An electron having charge ‘e’ and mass ‘m’ is moving in a uniform electric field E. Its acceleration will be 

(1) e2m

(2) E2em

(3) eEm

(4) mEe

Subtopic:  Electric Field |
 93%
From NCERT
AIIMS - 2002
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

A pendulum bob of mass 30.7×106kg and carrying a charge 2×108C is at rest in a horizontal uniform electric field of 20000 V/m. The tension in the thread of the pendulum is (g=9.8m/s2)

(1) 3×104N

(2) 4×104N

(3) 5×104N

(4) 6×104N 

Subtopic:  Electric Field |
 52%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch