Describe how a house protected by a lightning conductor.

a)

i) A house is protected by a lightning conductor through the following mechanism:

• A lightning conductor is a thick metal strip or rod, usually made of copper, installed on the highest point of a building.
• This conductor is connected to a thick copper plate buried deep in the ground.
• When lightning strikes the building, the conductor provides a low-resistance path for the massive electrical current to flow directly and safely into the earth.
• This prevents the lightning current from passing through the building's structure, thus protecting it from fire, structural damage, and damage to electrical appliances.

ii) Two dangers of lightning are:

• Death of people and animals: The extremely high voltage and current of a lightning strike can cause severe burns, cardiac arrest, and neurological damage, leading to instant death.
• Destruction of properties: Lightning strikes can ignite fires in buildings, trees, and forests. They can also cause structural damage to buildings and damage or destroy electrical appliances and systems.

iii) Three safety precautions that should be taken against lightning are:

• Stay indoors: During a thunderstorm, seek shelter inside a sturdy building or a hard-topped vehicle. Avoid open spaces.
• Avoid contact with electrical appliances and plumbing: Do not use landline phones, computers, or other electrical equipment, and avoid taking baths or showers during a thunderstorm, as lightning can travel through electrical systems and plumbing.
• Do not stand under tall objects or in open fields: Tall trees, poles, and isolated structures can act as lightning rods. Open fields offer no protection and make you the tallest object, increasing your risk.

b) The question for part 2 is incomplete. Based on the visible text, "A pot with water is placed on an electric stove and the water is heated until it boiled. The electric stove...", it likely asks about the function of the electric stove.

The electric stove heats the water by converting electrical energy into heat energy through a heating element. This heat is then transferred to the pot and subsequently to the water, raising its temperature until it boils.