Lightning Conductors

Q.

Write the name of input and output devices and their features?

Q.

Which of the following is an input device ?

1. Keyboard

2. Mouse

3. Printer

4. Speaker

Q.

What is a lightning conductor? How does it work?

Q.

Question 21

Explain how does lightning conductor protect a building from getting struck by lightning.

Q.

Why should a person not stand under a tree during a thunderstorm?

Q.

Which device is used to protect the buildings from the effect of lightning?

1. Light house

2. Lightning conductor

3. Lightning insulator

4. None of these

Q.

Which is considered a direct entry input device?

1. Light pen

2. Mouse

3. Optical scanner

4. All of these

Q. What is the reason for the lightning that we see?

1. Accumulation of positive charge over Earth's crust.
2. 
   Accumulation of positive charge over the face of clouds facing Earth.
3. Charges acquired by the rain-drops.
4. Accumulated of equal charges over Earth and clouds.

Q.

What type of device is computer keyboard?

Q.

___ device is used to protect buildings from lightning.

Q. The process of transferring charge from a charged body to earth is called .

1. earthing
2. electrocution
3. electrolysis
4. electroplating

Q.

Which one of the following is not an input device?

1. Keyboard

2. Scanner

3. Mouse

4. Monitor

Q.

Which of the following is not an input device:

1. OCR

2. Optical scanner

3. Voice recognition voice

4. COM

Q.

(a) How does a lightning conductor protect a tall building? Name the scientist who invented the lightning conductor.

(b) Why are lightning strikes more frequent in hilly areas?

Q. Lightning rods can be made out of which of the following materials?

1. Wood
2. Copper
3. Plastic
4. Aluminium

Q.

1. Not build tall buildings

2. Install lightning conductors

3. Have a roof top garden with tall trees

4. Install many TV antennas

Q.

Which of the following can be used to make a lightning conductor?

1. Copper

2. Alluminum

3. Steel

4. Plastic

Q.

A positively charged sphere is connected to the earth

1. The electrons from the earth flow into the sphere till it is electrically neutral.

2. The electrons from the earth flow into the sphere till it gets negatively charged.

3. The positive charges( protons) on the sphere flow into the earth.

4. None of the above.

Q.

Which of the following is an input device ? GK Q&A

1. Printer

2. Monitor

3. Keyboard

4. Speaker

Q.

Question 21

Explain how does lightning conductor protect a building from getting struck by lightning.

Q.

Question 18

Identify the lightning conductor and the copper plate in the figure.

Q.

Which of the following materials can be best used to make a lightning conductor?

1. Brick

2. Copper

3. Wood

4. Plastic

Q. A lightning conductor installed in a building ____.

1. spreads the current equitably across the building and then directs it to the ground
2. repels the lightning
3. forces the lightning to fall in an area where there are no buildings
4. does not let any current to pass through the building and directs the charges to the ground

Q.

When lightning strikes a lightning rod on top of a tall building, electrical energy flows through a wire and into the _____

1. atmosphere

2. cloud

3. roof

4. ground

Q.

Why is one end of a lightning conductor buried deep under the ground?

1. Earth can absorb any amount of charges.

2. It helps to create a return path for the charges

3. Earth is a positively charged body

4. The Earth is an insulator

Q. What is a lightning conductor? How does it work?

Q. A lightning conductor installed on a building will ___

1. direct the charge into the ground.
2. stop the lightning.
3. direct the lightning to some other place.
4. not let the current to pass through the building.

Q.

Lightning conductor cannot protect a building from lightning.

1. True

2. False

Q.

A lightning conductor is a device which transfers:

(a) electric energy (b) light energy

(c) solar energy (d) photoelectric energy

Q.

If the materials used for constructing a building were good conductors, do you think lightning will strike the building? Will the lightning conductor be still required to be installed in the building?