Physics-
General
Easy

Question

A sphere of radius r is charged to a potential V. The outward pull per unit area of its surface is given by

  1. fraction numerator 4 pi epsilon subscript 0 V squared over denominator r squared end fraction
  2. fraction numerator epsilon subscript 0 V squared over denominator 2 r squared end fraction
  3. fraction numerator 2 epsilon subscript 0 V squared over denominator r squared end fraction
  4. fraction numerator epsilon subscript 0 V squared over denominator 4 r squared end fraction

The correct answer is: fraction numerator epsilon subscript 0 V squared over denominator 2 r squared end fraction

Related Questions to study

General
chemistry-

Aniline is not the major product in one of the following reactions. Identify that reaction.

Aniline is not the major product in one of the following reactions. Identify that reaction.

chemistry-General
General
chemistry-

The reaction,CH subscript 3 CN plus 4 straight H rightwards arrow with Na divided by straight C subscript 2 straight H subscript 5 OH on top CH subscript 3 CH subscript 2 NH subscript 2 is called:

The reaction,CH subscript 3 CN plus 4 straight H rightwards arrow with Na divided by straight C subscript 2 straight H subscript 5 OH on top CH subscript 3 CH subscript 2 NH subscript 2 is called:

chemistry-General
General
physics-

If area of each plate is A and the successive separations are d, 2d and 3d then the equivalent capacitance across A and B is

 

If area of each plate is A and the successive separations are d, 2d and 3d then the equivalent capacitance across A and B is

 

physics-General
parallel
General
physics-

Two plates, each of area A, are placed parallel to each other at a distance d. One plate is connected to a battery of e.m.f. E and its negative is earthed. The other plate is also earthed.


The charge drawn by plate is

Two plates, each of area A, are placed parallel to each other at a distance d. One plate is connected to a battery of e.m.f. E and its negative is earthed. The other plate is also earthed.


The charge drawn by plate is

physics-General
General
physics-

Two identical capacitors have the same capacitance C. One of them is charged to potential V subscript 1 and the other to V subscript 2. The negative ends of the capacitors are connected together. When the positive ends are also connected, the decrease in energy of the system is

Two identical capacitors have the same capacitance C. One of them is charged to potential V subscript 1 and the other to V subscript 2. The negative ends of the capacitors are connected together. When the positive ends are also connected, the decrease in energy of the system is

physics-General
General
physics-

A capacitor of capacitance C subscript 0 charged to a potential V subscript 0 and then isolated. A small capacitor C is then charged from C subscript 0 , discharged and charged again; the process being repeated n times. Due to this, potential of the larger capacitor us decreased to V . The value of C is

A capacitor of capacitance C subscript 0 charged to a potential V subscript 0 and then isolated. A small capacitor C is then charged from C subscript 0 , discharged and charged again; the process being repeated n times. Due to this, potential of the larger capacitor us decreased to V . The value of C is

physics-General
parallel
General
chemistry-

Nitric oxide is prepared by the action of  HNO subscript 3  on

Nitric oxide is prepared by the action of  HNO subscript 3  on

chemistry-General
General
chemistry-

For chrome plating the electrolytic bath contains:

For chrome plating the electrolytic bath contains:

chemistry-General
General
chemistry-

The metal which does not form ammonium nitrate by reaction with dilute nitric acid is

The metal which does not form ammonium nitrate by reaction with dilute nitric acid is

chemistry-General
parallel
General
chemistry-

When conc.   times straight H subscript 2 SO subscript 4 is distilled with , times P subscript 4 O subscript 10 the product formed is:

When conc.   times straight H subscript 2 SO subscript 4 is distilled with , times P subscript 4 O subscript 10 the product formed is:

chemistry-General
General
chemistry-

Ammonia reacts with excess of chlorine to form:

Ammonia reacts with excess of chlorine to form:

chemistry-General
General
chemistry-

The last orbit of argon would have electrons

The last orbit of argon would have electrons

chemistry-General
parallel
General
chemistry-

Oxide of nitrogen used as catalyst in lead chamber process for the manufacture of straight H subscript 2 SO subscript 4  is:

Oxide of nitrogen used as catalyst in lead chamber process for the manufacture of straight H subscript 2 SO subscript 4  is:

chemistry-General
General
chemistry-

Reaction of PCland PhMgBr would give

Reaction of PCland PhMgBr would give

chemistry-General
General
chemistry-

….. liberates oxygen from water.

….. liberates oxygen from water.

chemistry-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.