Question # 1

The leV =

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1.6x10-19C

1.6x10-11J

1.6x10-19J

1.6x10-11C

Selenium is a

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Insulator

Photoconductor

Conductor

First insulator then conductor

Electric flux is a

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Vector quantity

Scalar quantity

Both (a) and (b)

None of above

The electric intensity due to two oppositely charged plates is

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None of these

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

Selenium is

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Insulator is dark

Insulator in light

Conductor in dark

Semi conductor in dark

Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.

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Positively charged

Negatively charged

Electrically neutral

Positively and negatively charged

Concept of electric field lines was given by:

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Michelson

Henry

Michael faraday

Oersted

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

When some di electric is inserted between the plates of a capacitor, then capacitance.

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Decreases

Increases

Becomes zero

Becomes infinity

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

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

Electron volt is the unit of.

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Potential

Potential difference

Electric current

Electric energy

The quantity time constant RC has units of.

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Charge

Time

Capacitance

Resistance

The process of copying is:

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Axillugraphy

Chromatography

Xerography

Spectrography

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

The work done is bringing a unit positive charge from infinity to that point in an electric field is called.

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Potential

Potential difference

Absolute potential

All of these

Presence of dielectric always.

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Increase the electrostatic force

Reduces the electrostatic force

Do not effect electrostatic force

Doubles the electrostatic force

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Physics ICS Part 2 Chapter 12 Online MCQ's Test MCQs With Answers

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