Electric Charges and Fields Test

Result

Electric Charges and Fields Test - 26

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Weekly Quiz Competition

Question 1
1 / -0

The property between two charged ebonite rods is :

A
attraction

B
repulsion

C
both

D
none

Solution

If two ebonite rods A and B are separately rubbed with fur and then they are brought near each other, they repel each other.
Question 2
1 / -0

Sometimes you get a mild spark when you touch the metal surface of a car. What might be the reason?

A
Due to magnetic attraction, a spark is created

B
Due to electrostatic charge residing on the metal as well as on skin, mild spark is observed

C
Car tries to become neutral by donating electrons

D
Its the only path to ground

Solution

Negative electric charge often resides on the surface of metal of car. When you touch the car, electrostatic discharge occurs via your body and you get a mild spark.
Question 3
1 / -0

If a glass rod is rubbed on silk cloth and then brought near the bits of paper it...... then.

A
Attracts

B
Repel

C
Both

D
None

Solution

If a ordinary glass rod is rubbed on the silk cloth is brought near bits of paper, it is found that they have acquired the attractive property. The glass rod get charged on rubbing.
Question 4
1 / -0

If a comb is rubbed on dry hairs, and then brought near paper pieces, it :

A
attracts paper

B
repels paper

C
remains indifferent to paper

D
either attracts or repels paper

Solution

If we bring small bits of paper near a rubber (or plastic) comb, it is found that the comb does not attract the bits of paper. But if the same comb is first rubbed on dry hairs and then it is brought near the paper pieces, it attracts them.
Question 5
1 / -0

Which is not an electrostatic phenomenon

A
Comb rubbed with hair attracts paper bits

B
A blanket in winters in dark when scrambled gives electrical sparks

C
Two people shaking hands feel a small spark in winters

D
Heat is generated in a resistor carrying current

Solution

(d) is based on Joule's Law.
Rest are electrostatic phenomenon.
Question 6
1 / -0

What will be the nature of charge on the metal paper clip of electroscope when a positively charged body is brought in contact with it?

A
Positive

B
Negative

C
Partially negative

D
None of the above

Solution

In a given activity, one positively charged body is coming in contact with uncharged metal paper clip. in this process, positive charge will transfer from charged body to metal paper clip by conduction.
Question 7
1 / -0

.......... Property develops in comb due to friction.

A
Attractive

B
Repulsive

C
Both

D
None

Solution

An attractive property is develop in the comb due to friction. The comb on rubbing over dry hairs is aid to be charged.
Question 8
1 / -0

......... Charge is produced by friction

A
Stationary

B
No

C
Attractive

D
All

Solution

The stationary charge (i.e static electricity) is produced by friction.
Question 9
1 / -0

Lightning is a ________ phenomenon

A
Electromagnetic

B
Current electricity

C
Electrochemical

D
Electrostatic

Solution

Lightning is a sudden electrostatic discharge during an electrical storm between electrically charged regions of a cloud, between that cloud and another cloud, or between a cloud and the ground.
Question 10
1 / -0

The filament of an electric bulb is made of :

A
Carbon

B
Aluminium

C
Tungsten

D
Nickel

Solution

The filament of an electric bulb is made of tungsten because it has some amazing properties including the highest melting point $$(3422^oC )$$, lowest vapor pressure, and greatest tensile strength out of all the metals. Because of these It can reach high temperature before melting.

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Re-Attempt Weekly Quiz Competition

Electric Charges and Fields Test - 26

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Electric Charges and Fields Test - 26

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Question 1

attraction

repulsion

both

none

Solution

Question 2

Due to magnetic attraction, a spark is created

Due to electrostatic charge residing on the metal as well as on skin, mild spark is observed

Car tries to become neutral by donating electrons

Its the only path to ground

Solution

Question 3

Attracts

Repel

Both

None

Solution

Question 4

attracts paper

repels paper

remains indifferent to paper

either attracts or repels paper

Solution

Question 5

Comb rubbed with hair attracts paper bits

A blanket in winters in dark when scrambled gives electrical sparks

Two people shaking hands feel a small spark in winters

Heat is generated in a resistor carrying current

Solution

Question 6

Positive

Negative

Partially negative

None of the above

Solution

Question 7

Attractive

Repulsive

Both

None

Solution

Question 8

Stationary

No

Attractive

All

Solution

Question 9

Electromagnetic

Current electricity

Electrochemical

Electrostatic

Solution

Question 10

Carbon

Aluminium

Tungsten

Nickel

Solution

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