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Current Electricity Class 12 Notes Physics Chapter 3

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FAQs on Current Electricity Class 12 Notes Physics Chapter 3

1. What is electrostatics?
Ans. Electrostatics is the branch of physics that studies the behavior of stationary electric charges. It involves the study of electric fields, electric potential, and the interaction between charged objects.
2. What is the relationship between electric charge and electric force?
Ans. The relationship between electric charge and electric force is governed by Coulomb's Law. According to this law, the electric force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
3. How does the process of charging by induction work?
Ans. Charging by induction occurs when a charged object is brought near a neutral object, causing the charges in the neutral object to redistribute. This redistribution results in a temporary separation of charges, with one side becoming positively charged and the other side becoming negatively charged.
4. What is electric current and how is it measured?
Ans. Electric current is the flow of electric charge through a conductor. It is measured in amperes (A) and is defined as the rate at which charge passes through a given point in a circuit. It can be measured using an ammeter.
5. What is the difference between direct current (DC) and alternating current (AC)?
Ans. Direct current (DC) is the flow of electric charge in one direction, while alternating current (AC) is the flow of electric charge that alternates periodically in direction. DC is commonly used in batteries and electronic devices, while AC is used in household electricity supply.
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