Class 8 Exam > Class 8 Videos > Science Class 8 > How do Lightning Conductors Work?
How do Lightning Conductors Work? Video Lecture | Science Class 8
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FAQs on How do Lightning Conductors Work? Video Lecture - Science Class 8
| 1. How does a lightning conductor work? |  |
Ans. A lightning conductor works by providing a direct path for lightning to follow and safely discharge into the ground. It consists of a metal rod, usually made of copper or aluminum, that is attached to the highest point of a building. The rod is connected to a network of metal cables and conductors buried deep into the ground, called grounding electrodes. When lightning strikes, the conductor attracts the electrical charge and conducts it safely into the ground, preventing damage to the building.
| 2. Why are lightning conductors necessary? | |
Ans. Lightning conductors are necessary to protect buildings and structures from the destructive power of lightning strikes. When lightning strikes a building, it can cause fires, explosions, structural damage, and even endanger the lives of people inside. A lightning conductor provides a safe path for lightning to follow, directing the electrical current away from the building and into the ground, reducing the risk of damage or injury.
| 3. What materials are used to make lightning conductors? | |
Ans. Lightning conductors are typically made of highly conductive materials such as copper or aluminum. These metals have low resistance to electrical current, allowing them to effectively conduct the lightning's electrical charge. Copper is often preferred due to its excellent conductivity and resistance to corrosion. Aluminum is also commonly used as a more cost-effective alternative.
| 4. Can lightning conductors prevent lightning strikes? | |
Ans. Lightning conductors cannot prevent lightning strikes from occurring. Their purpose is to provide a safe path for the lightning's electrical charge to follow, once a strike has already occurred. The presence of a lightning conductor on a building, however, can help to reduce the likelihood of a direct strike by attracting the lightning to its rod, rather than the building itself. This can help to protect the structure and its occupants.
| 5. Do all buildings need lightning conductors? | |
Ans. Not all buildings require lightning conductors. The need for a lightning conductor depends on the structure's height, location, and the presence of other conductive materials nearby. Tall buildings, structures located in areas prone to lightning strikes, or those with conductive roofs or materials are more likely to benefit from having a lightning conductor installed. It is advisable to consult with a professional lightning protection expert to determine if a building requires a lightning conductor.
Text Transcript from Video
lightning conductor
this is a simple device used to protect
tall buildings from the Lightning it
consists of a long thick copper rod
passing through the building to the
ground the lower end of the rod is
connected to a copper plate buried
deeply into the ground a metal plate
with the number of spikes is connected
to the top end of the copper rod and
kept at the top end of the building when
a negatively charged cloud passes over
the building the positive charge will be
induced on the pointed conductor the
positively charged sharp points will
ionize the air in the vicinity this will
partly neutralize the negative charge of
the cloud they by lowering the potential
of the cloud their negative charges that
are attracted to the conductor travels
down to the earth thereby preventing the
lightning stroke from the damage of the
building
you
this is a simple device used to protect
tall buildings from the Lightning it
consists of a long thick copper rod
passing through the building to the
ground the lower end of the rod is
connected to a copper plate buried
deeply into the ground a metal plate
with the number of spikes is connected
to the top end of the copper rod and
kept at the top end of the building when
a negatively charged cloud passes over
the building the positive charge will be
induced on the pointed conductor the
positively charged sharp points will
ionize the air in the vicinity this will
partly neutralize the negative charge of
the cloud they by lowering the potential
of the cloud their negative charges that
are attracted to the conductor travels
down to the earth thereby preventing the
lightning stroke from the damage of the
building
you
About this Video
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Nov 21, 2024 Last updated |
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