QUIZ 3 (Class 6)

What are the simple sources of electricity mentioned?

• Batteries, accumulators, and dynamo

• Generators and solar cells

• Wind turbines and solar panels

• Coal and natural gas

What is a battery?

• A device that converts mechanical energy into electrical energy

• A portable source of electrical energy based on a chemical reaction

• A type of solar energy collector

• A rechargeable energy storage device

What type of battery is commonly used in portable electronic devices?

• Lead-acid battery

• Lithium-Ion (Li-ion) battery

• Nickel-Cadmium battery

• Alkaline battery

What is the main difference between Li-ion and LiPo batteries?

• Li-ion batteries are rechargeable, LiPo are not

• LiPo batteries have a flexible packaging

• Li-ion batteries are used in drones, LiPo are not

• There is no difference

What is the purpose of a 9V battery?

• Used in high-power devices

• Used in smoke detectors and low-power devices

• Used in electric vehicles

• Used in solar panels

What is an accumulator?

• A type of disposable battery

• A type of rechargeable battery that can be reused

• A device that generates electricity

• A type of solar cell

How does a generator work?

• By converting electrical energy into mechanical energy

• By converting mechanical energy into electrical energy

• By using solar energy to generate electricity

• By using chemical reactions to produce energy

What is the function of solar cells?

• To store electrical energy

• To convert sunlight into electrical energy

• To generate electricity from wind

• To produce chemical energy

What is a dynamo?

• A device that converts sunlight into electricity

• A device for generating electrical energy using metal wheels

• A type of rechargeable battery

• A solar energy collector

What are Hydrocentrals?

• Hydrocentrals are hydroelectric power plants that generate electricity from flowing water.
• Hydrocentrals are wind turbines that generate electricity.
• Hydrocentrals are solar energy farms.
• Hydrocentrals are water purification facilities.