Electrostatic RT

Electric intensity E=A/B Here B is a:

• Negative charge

• Positive charge

• Positive test charge

• Negative test charge

In which medium the force of repulsion between two charges would be minimum?

• Oil

• Air

• Vacuum

• Distilled water

Coulomb’s law the force

• Between two hard metallic sphere

• Between two billiard balls

• Between Two point charges

• None of these

If the distance between the two charge bodies is doubled, the Coulomb’s force between them becomes

• Four times

• One fourth

• Half

• Double

Electric lines of forces about a negative charge are

• Circular, anticlockwise

• Circular, clockwise

• Radial, inward

• Radial, outward

A suitable unit for expressing electric field strength is

• N/C

• A-m

• C/m²

• V/C

Electric flux is a;

• Vector quantity

• Scalar quantity

• Both A & B

• None

The work done in moving a unit positive charge against the electric field is called

• Electric force

• Electrical potential

• Electric flux

• None of these

The relation between electric V and electric intensity E is

• V=E/d

• V=Ed

• Vd=E

• V=Ed²

No current flows between two charged bodies when connected

• If they have some capacity

• If they have the same quantity of charge

• If they have the same potential

• If they have the same charge-to-potential ratio