Electrostatics Set 5 - ilmijazeera

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#1. Coulomb's law is only applicable for

Big charges

Small charges

Point charges

Any charges

#2. The force exerted by two charged bodies on one another, obeys Coulomb's law provided that

The charges are not too small

The charges are in vacuum

The charges are not too large

The linear dimension of charges is much smaller than distance between them

#3. The constant K in Coulomb's Law depends upon

Nature of medium

System of units

Intensity of charge

Both a & b

#4. A unit if electric charge is:

Volt

Henry

Coulomb

Weber

#5. Presence of dielectric always:

Increases the electrostatic force

Decreases the electrostatic force

Does not effect the electrostatic force

Doubles the electrostatic force

#6. The electric field created by positive charge is:

Radially outward

Zero

Circular

Radially inward

#7. The value of relative permittivity for all the dielectrics is always:

Less than unity

Greater than unity

Equal to unity

Zero

#8. Photo-copier and inkjet printers are the applications of:

Electronics

Magnetism

Electrostatics

Thermodynamics

#9. Selenium is a conductor material when exposed to

Light

Dark

Mono chromatic light

None of these

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