1. Define circuit.
- The path made by connecting the electric source, load, and switch with a conducting wire allows current to pass through it is called circuit.
2. Define open and closed circuit.
- The circuit in which electricity is continuously flowing is called closed circuit.
3. What do you mean by connection of loads?
- The combination of two or more loads in a circuit is called connection of loads. Mainly it is of two types:
parallel and series.
4. What do you mean by domestic electrification?
- The electric circuit which is connected in places like homes, industries, factories etc. Is called domestic circuit. Generally, Alternating current (AC) is used.
5. Define DC and AC with example.
- The current which does not change the polarity and magnitude is called direct current (DC). For example,current obtained from a battery, dry cell, DC generator etc.
- The current which changes polarity and magnitude continously is calledalternating current(AC). For example, current obtained from a dynamo, generator etc.
6. What are thee points to be remembered during a house wiring?
- The points to be remembered during house wiring are:
a. Switch and fuse should always be connected in phase or live wire.
b. Fuse with suitable power should be used.
c. Wiring should not be done in moist and damp places.
d. The lines for light and power sockets should be seperate.
7. What are the types of electric wires?
- The types of wire are as follows:
a. Live wire or phase wire: The wire which conducts current from a source of electricity to load is known as live wire or phase wire. Its color is red or brown.
b. Neutral wire: The wire which conducts electricity from electric appliances to the source of electricity is called a neutral wire. Its color is black or blue.
c. Earthing wire: The wire connecting electric appliances to the earth is called earthing wire. It carries leakage of current from the outer surface of electrical appliances to the earth. Its color is green or yellow.
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