Answer the following questions in one word or a single sentence.
1. Define electric circuit.
2. Name the coating in CFL that makes it glow.
3. What is the purpose of installing an MCB in a circuit?
4. Name the three heating effects produced by current.
5. How does the fuse rating differ from the rating of electrical device?
6. Draw the correct arrangement for cells in a cell holder to make a battery
7. Write the full forms of MCB and CFL.
8. Write the three characteristics of a fuse wire
Answers
Answer:
kya hai bro
Explanation:
samjh. me. nahi aa raha hai
Answer:
1. An electrical network is an interconnection of electrical components or a model of such an interconnection, consisting of electrical elements. An electrical circuit is a network consisting of a closed loop, giving a return path for the current.
2. In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor. This generates invisible ultraviolet light that excites a fluorescent coating (called phosphor) on the inside of the tube, which then emits visible light.
3. The MCB is an electrical switch which is self-operating and is needed as a protection to human beings and electrical appliances from electrical shocks caused by current overload or short circuits. Under normal working conditions, a rated amount of current flows through an electrical network.
4. i. The resistance, R of the conductor. A higher resistance produces more heat.
ii. The time, for which current flows. The longer the time the larger the amount of heat produced.
iii. The amount of current, the higher the current the larger the amount of heat generated.
5. More the Power of the device more the fuse rating.. so since current will be more, the fuse rating will be higher.
6. The diagram is already given in the above picture.
7. MCB: It stands for "Miniature Circuit Breaker". CFL: It stands for "Compact Fluorescent Lamp"
8. Fuse wire are used in electric circuits to protect home appliances from damaging by huge amount amount of current. Fuse wire should be such that it melts immediately when strong current flows through the circuit. The same is possible if its melting point is low and resistivity or the resistance is high.
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