Current - Electricity Video Lecture | SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

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FAQs on Current - Electricity Video Lecture - SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

1. What is current electricity?
Ans. Current electricity refers to the flow of electric charge in a conductor. It is the movement of electrons through a closed circuit, creating a continuous flow of electric current.
2. How is current measured?
Ans. Current is measured using a device called an ammeter. The ammeter is connected in series with the circuit and it measures the amount of electric current passing through it. The unit of measurement for current is ampere (A).
3. What factors affect the flow of current in a circuit?
Ans. Several factors can affect the flow of current in a circuit. These include the voltage applied to the circuit, the resistance of the circuit, and the type of material used as a conductor. Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance.
4. What is the difference between AC and DC current?
Ans. AC (alternating current) and DC (direct current) are two types of electric current. AC current periodically changes its direction, while DC current flows in only one direction. AC current is commonly used in household electricity, while DC current is used in batteries and electronic devices.
5. How does electric current impact our daily lives?
Ans. Electric current plays a crucial role in our daily lives. It powers our homes, lights, appliances, and electronic devices. It is also used in industries for various purposes such as manufacturing, transportation, and communication. Without electric current, many aspects of modern life would not be possible.
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