Home
Class 12
PHYSICS
The electrical potential at a certain di...

The electrical potential at a certain distance from a point charge is 600V the electric field is `200N//C`. The distance of the point charge is….m.

A

2

B

3

C

1

D

0

Text Solution

Verified by Experts

The correct Answer is:
B
`E=(kq)/r^2=(Kq//r)/r`
`therefore E=V/r`
`r=V/E=600/200=3`
Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-A|10 Videos

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-B|8 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)|142 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos

Similar Questions

Explore conceptually related problems

A point P al a certain distance from charge Q has electric potential 600 V and elecuic field intensity 150 N/C, lhen distance of point from charge Q is ...... M.

The variation of potential with distance r from a fixed point is shown in fig. The electric field at r = 5cm, is :

Electrostatic potential can be defined at any - point in the electric field because electric field is

Explain electric field and also electric field is point charge.

If the potential at the center of a uniformly charged sphere of radius R is V then electric field at a distance r from the center of sphere will be ( r lt R ) : -

In electric dipole is placed in an electric field of a point charge, then........

Obtain the equation of electric field at a point by system of 'n' point charges.

A point charge Q is placed at the centre of a spherical conducting shell. A total charge of -q is placed on the shell. The magnitude of the electric field at point P_1 at a distance R_1 from the centre is X. The magnitude of the electric field due to induced charges at point P_2 a distance R_2 from the centre is Y. The values of X and Y are respectively.

In an electric field. electric potential at point A is 40 V and that at point B is 90 V. The work to be done in taking 2 C charge from point A to point B is …………….. .

Draw a graph for variation of potential V with distance r for a point charge Q.