1. How did electricity come into existence? A: Electricity is a form of energy. It doesn’t just appear out of nowhere. Instead, it is generated from other forms of energy such as water, heat, mechanical motion, or nuclear power.
2. What is electric current? A: Just like water flows through a pipe, electric current is the flow of electrical energy through a conductor. It moves in a specific direction and is invisible to the naked eye. The speed of electric current is approximately 300,000 kilometers per second.
3. What is voltage? A: Voltage, also known as electric potential difference, is similar to the difference in water levels. The higher the water level difference, the stronger the water flow. Similarly, the higher the voltage, the greater the force that drives the electric current through a circuit.
4. What is a conductor? A: A conductor is any material that allows electric current to pass through it. Metals are typical conductors, but some liquids like water and even the human body can also conduct electricity. So, anything that can carry an electric charge is considered a conductor.
5. What is an insulator? A: An insulator is a material that resists the flow of electricity. Examples include plastics, rubber, glass, ceramics, dry wood, and air. These materials are used to prevent unwanted electrical currents and protect people from shocks.
6. Why do people get electrocuted? A: When a person touches a charged object while standing on the ground, the electricity can travel through their body and into the earth, causing an electric shock. This happens because both the body and the ground are conductive.
7. Why can electric shocks be fatal? A: The severity of an electric shock depends on factors like the voltage, the current, and the duration of contact. High voltage and strong currents can cause serious damage to the nervous system and heart, leading to breathing difficulties or even death.
8. What should you do if there’s an electrical fire? A: If you smell burning plastic or notice smoke, check the wiring immediately. In case of an electrical fire, turn off the power first before trying to extinguish it. Never use water, as it conducts electricity. Instead, use sand or a fire blanket to put it out safely.
9. How to stay safe with electricity in daily life? A: Always avoid unplugging or connecting wires without proper knowledge. Improper installation can lead to dangerous situations. When changing a light bulb, make sure to turn off the power first. Never touch electrical devices with wet hands or a wet cloth. Always stand on a non-conductive surface like a wooden chair. Also, ensure that the metal parts of sockets are properly grounded to avoid electric shocks.
Electricity is powerful, but with proper understanding and care, it can be used safely and efficiently in our daily lives.
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