Tag: advanced of lightning

Questions Related to advanced of lightning

There are $4\times 10^{23}$ atoms in a metal sphere. If one electron is removed from 0.1% atom. what will be the charge on the sphere?

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. $64C$

  2. $6.4C$

  3. $0.64C$

  4. $-6.4C$

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Correct Option: A

Clouds get electrically charged when :

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. The UV rays of sun falls on them

  2. Air molecules rub against water molecules

  3. Cold currents of air rub against hot currents of air

  4. Both B and C

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Correct Option: D
Explanation:

The heat from the sun and warm air cause water from water bodies to vaporize. These vapour accumulate in the sky to form clouds. When these vapour molecules rub against the air molecules or other vapour molecules, they acquire charge due to friction.

Lightning occurs when an electrical charge is built up within a cloud, due to static electricity generated by supercooled water droplets colliding with ice crystals near the freezing level. When a large enough charge is built up, a large discharge will occur and can be seen as lightning. The temperature of a lightning bolt can be five times hotter than the surface of the sun. 

Both B and C are correct.
Option D 

A lightning rocket is a device used to control 

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. time and location of a lighting strike.

  2. fuel and location of a lighting strike.

  3. the lighting of the strom

  4. none of the above

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Correct Option: A
Explanation:

A lightening rocket is a rocket device, about the size of a man, that trails behind a conductor, such as fine copper wire. It is therefore, a conducting lightening rod which is grounded and positioned along side the launch tube in communication with the conductive path to thereby control time and location of a lightening strike from the thundercloud.

Which of the following statement is correct?

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. The earth's surface is negatively charged

  2. The earth's surface is positively charged

  3. The earth's surface is neutral

  4. None of the above

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Correct Option: A
Explanation:

The earth's surface is negatively charged.


Answer-(A)

Electric discharges in the atmosphere is associated with natural phenomena such as :

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. lightning

  2. reflecting

  3. refracting

  4. none of the above

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Correct Option: A
Explanation:

$Lightning$ is the natural phenomena of electric discharge through atmosphere.


Answer-(A)

Atmospheric electricity is generated due to 

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. the accumulation of static charges

  2. the accumulation of moving charges

  3. the destruction of static charges

  4. destruction of moving charges

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Correct Option: A
Explanation:

The presence of electrical action is the atmosphere, due to the accumulation of enormous static charges generated by friction of air upon itself, can be accounted for the generation of atmospheric electricity i.e, lightening and thunderstorms. 

The theory of atmospheric electricity explains which of the following phenomena?

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. Free electricity causes thunderstorms

  2. Current due to a charge

  3. The high temperature causes people

  4. None of the above

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Correct Option: A
Explanation:
Atmospheric electricity is the study of electrical charges in the Earth's atmosphere (or that of any planet). One of the phenomenons that is a result of this is that free electricity causing thunderstorm.

Static charges in the atmosphere is generated by

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. induction from the earth's surface

  2. conduction between clouds

  3. friction of the air upon itself

  4. No reason

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Correct Option: C
Explanation:

The accumulation of enormous static charges in the atmosphere is generated by the friction of air upon itself. Such accumulation of static charges in the atmosphere can be the cause of atmosphere electricity. 
.

Atmospheric electricity was discovered by

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. Isaac Newton

  2. Michael Faraday

  3. Benjamin Franklin

  4. Thomas Edison

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Correct Option: C
Explanation:

Atmospheric electricity is the study of electrical charges in the earth's atmosphere. Benjamin Franklin discovered it. His experiments showed that electrical phenomenon of atmosphere were not fundamentally different from those produced in the laboratory by listing many similarities between electricity and lighting. 

State whether the given statement is True or False :

Lightning conductor always develops the opposite charges as is the charge in the clouds.

physics some natural phenomena how lightning occurs? the story of lightning advanced of lightning

  1. True

  2. False

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Correct Option: A
Explanation:

Lightening conductor always develops the opposite charges as in the charge in the clouds. This statement is true. Because according to the lightening dissipative theory, which states that as a cloud approaches a building, there is a conductive pathway established between the statically charged cloud and lightening rod. The charge induced by the cloud on lightening rod is opposite to that  on the cloud. According to this theory, static charges gradually migrate along this pathway to the ground, thus reducing the explosive discharge.