Question # 1

The absolute electric potential at a point distance 20 cm from a charge of 2 uC is.

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9 x 10² V

9 x 10³ V

9 x 10⁴ V

9 x 10 ⁵ V

Charge carriers in electrolytes are.

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Protons

Electrons

Holes

Positive and Negative ions

Photo copier and inkjet printer are the applications of

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Magnetism

Electricity

`.Electro magnetism

Electrostatics

Electric field intensity at a point is defined by the relation.

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E= q/F

E = F/q

E = qF

E = F/q2

The "toner" of photocopier is given:

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Positive charge

Negative charge

Remains neutral

All of above

One of the applications of electrostatic induction is

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Laser

Photocopier

X ray machine

Wilson cloud chamber

A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:

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q=Q/4

q=Q/2

q=Q

None of these

A force of 0.01 N is exerted on a charge 1.2 x 10^-5 C at a certain point. The electric field at that point is

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1.2 x 10⁴ N/C

1.2 x 10⁴ C/N

8.3 x 10² N/C

8.3 x 10^-2 N/C

if time constant in RC series circuit is small, then capacitor is charged or discharged.

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Slowly

Rapidly

At constant rate

Intermittently

Which material should be inserted between the plates of a capacitor in order to increase its capacitance.

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Copper

Mica

Iron

Tin

The electrons in one coulomb change is equal to.

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1.6 x 10^-19

2.25 x 10^-19

6.25 x 10^-18

6.25 x 10^-19

Concept of electric field lines was given by:

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Michelson

Henry

Michael faraday

Oersted

The electric flux through closed surface depends upon

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Charge

Medium

Geometry

Charge and Medium

Electric flux is a

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Vector quantity

Scalar quantity

Both (a) and (b)

None of above

A changing electric flux creates.

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Electric fields

Gravitational

Magnetic field

Electric charge

The fact that electric field exist in space around an electrical charge is

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Electrical property

Gravitational property

Intrinsic property of nature

Extrinsic property of nature

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

If a charge body moved against the electric field it will again

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Potential energy

K.E

Mechanical Energy

Electric potential energy

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid way between them is.

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1 V

2 V

Zero

V/2

When the medium is insulator the elecrostatic force between the charges is

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Decreased

Zero

Increased

None of above

Presence of dielectric between two charges always.

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Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

Some charge is being given to a conductor. Then its potencial

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Its maximum at surface

Its maximum at Its maximum at center

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

The electric field created by positive charge is:

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Radially outward

Circular

Radially inward

Zero

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