Question # 1

S.I unit of strength of electric field is

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J/C

C/V

V/C

N/C

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

One electron volt is equal to.

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1.6 x 10^-19 Joule

1.6 x 10^-19Coulomb

1.6 x 10^-12N

1.6 x 10¹⁸Joule

Charge on electron is

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1.6 x 10^-19 C

1.6 x 10¹⁹C

1.6 x 10^-17C

1.6 x 10¹⁷C

Charge carriers in electrolytes are.

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Protons

Electrons

Holes

Positive and Negative ions

A capacitor stores energy in the form of.

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Magnetic field

Heat energy

Electrical energy

Mechanical energy

Electric potential at a distance ''r'' from ''q'' is:

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V_r = 1/54πε_∘q/r₂

Vr=1/4πε_∘²q/r

V_r=1/4πε_∘2q/r

V_r=1/4πε_∘q²/r

Flux through any closed surface is:

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1/ε²_∘ times the total charge enclosed in it

ε²_∘ time the total charge enclosed in it

1/ε_∘ ties the total charge enclosed in ti

ε_∘ time the total charge enclosed in it

Electric flux is a

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Vector quantity

Scalar quantity

Both (a) and (b)

None of above

The electrical intensity is equal to:

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-Δr/Δv

Δv/Δr

Δv/Δv

-Δv/Δr

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

Electron volt is the unit of.

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Potential

Potential difference

Electric current

Electric energy

In photocopier, then drum is coated with layer of.

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Aluminium

Copper

Selenium

silver

SI unit of electric flux is.

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NmC¹

Nm^-1 C¹

Nm²C^-1

Nm³C²

Intensity of field inside a hollow charged sphere will be.

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Negative

Unaffected

Zero

Maximum

The electric field lines are closer where the field is

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Strong

Weak

Uniform

Variable

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

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Decreased

Zero

Increased

None of above

Coulomb /volt is called.

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Farad

Ampere

Joule

Henry

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