Question

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.​

Answer 1

Answer:

• An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

• 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.

• What purpose do they serve? 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.

• The heating effect of an electric current depends on three factors: The resistance, R of the conductor. A higher resistance produces more heat. The time, t for which current flows.

• More the Power of the device more the fuse rating.. so since current will be more, the fuse rating will be higher. same holds true when current drawn is less

• MCB: It stands for "Miniature Circuit Breaker". U SB: It stands for "Universal Serial Bus". CFL: It stands for "Compact Fluorescent Lamp

• A. High melting point, high specific resistance.
• B. Low melting point, low specific resistance.
• C. High melting point, low specific resistance.
• D. Low melting point, high specific resistance.