- Q: What is electricity?
A: Electricity is a form of energy that can produce light, heat, and motion.
- Q: Name two sources of electricity.
A: Dry cells (batteries) and power stations.
- Q: What is the device used to store chemical energy and give electricity?
A: A battery.
- Q: Which particle moves in a wire to produce electricity?
A: Electrons.
- Q: What do we call the path through which electricity flows?
A: An electric circuit.
- Q: Give one example of a conductor.
A: Copper.
- Q: Give one example of an insulator.
A: Rubber.
- Q: What do we call materials that allow electricity to pass through them?
A: Conductors.
- Q: What do we call materials that do not allow electricity to pass through them?
A: Insulators.
- Q: Name one natural source of electricity.
A: Lightning.
- Q: What is needed to complete a circuit?
A: A power source, wires, and a device like a bulb.
- Q: What happens if the circuit is open?
A: Electricity cannot flow.
- Q: What happens to the bulb in a closed circuit?
A: The bulb glows.
- Q: What is a switch?
A: A device used to open or close a circuit.
- Q: Why is copper used in wires?
A: Because it is a good conductor of electricity.
- Q: Why are wires covered with plastic?
A: To protect us from electric shocks.
- Q: What happens when we connect more batteries in series?
A: The bulb glows brighter.
- Q: What happens if we remove one bulb in a series circuit?
A: All bulbs go off.
- Q: In a parallel circuit, if one bulb goes off, what happens to others?
A: The other bulbs still glow.
- Q: Name one device that uses a parallel circuit at home.
A: Home lighting system.
- Q: What is static electricity?
A: Electricity produced by rubbing certain objects.
- Q: What happens if you rub a balloon on your hair?
A: The balloon sticks to the wall.
- Q: Why does hair stand up when rubbed with a comb?
A: Because of static charges.
- Q: What kind of charges attract each other?
A: Opposite charges.
- Q: What kind of charges repel each other?
A: Like charges.
- Q: What happens when we rub glass with silk?
A: The glass rod becomes positively charged.
- Q: What happens when we rub plastic with wool?
A: The plastic rod becomes negatively charged.
- Q: Can we see static electricity?
A: No, but we can feel or see its effect.
- Q: Why do we get a shock sometimes after touching a door handle?
A: Due to static electricity discharge.
- Q: Is lightning an example of static electricity?
A: Yes.
- Q: Name one household use of electricity.
A: Lighting bulbs.
- Q: How does electricity help in cooking?
A: By powering electric stoves and ovens.
- Q: How does electricity help in entertainment?
A: By powering TV, radio, and mobile phones.
- Q: Why are electric fans useful?
A: They help us keep cool in summer.
- Q: How do farmers use electricity?
A: For running water pumps.
- Q: How does electricity help in hospitals?
A: It powers life-saving machines like ventilators.
- Q: Can electricity be used in transport?
A: Yes, in electric cars and trains.
- Q: How does electricity help in industries?
A: It runs machines for manufacturing.
- Q: How does electricity help in communication?
A: It powers mobile networks and computers.
- Q: Give one renewable source of electricity.
A: Solar energy.
- Q: Why should we not touch switches with wet hands?
A: Because water conducts electricity and can cause shocks.
- Q: Why do electricians wear rubber gloves?
A: To protect themselves from electric shocks.
- Q: What is a fuse?
A: A safety device that stops the flow of excess current.
- Q: What happens if the current is too high in a circuit?
A: The fuse wire melts and breaks the circuit.
- Q: Why should we not overload plug points?
A: It can cause fire or short circuit.
- Q: What is an electric shock?
A: When current passes through our body accidentally.
- Q: What is earthing?
A: Connecting appliances to the ground to prevent shocks.
- Q: Why should we turn off lights and fans when not in use?
A: To save electricity.
- Q: What would happen if there was no electricity for one day?
A: Life would become difficult without lights, fans, and gadgets.
- Q: Why should we use renewable sources of electricity?
A: Because they do not pollute and never get exhausted.