1. What is a circuit made up of?
2. List the importance of circuits.
3. What do you understand by lighting effect and heating effect of
electric current?
4. Describe the different types of electric bulbs? Which one is the
most energy efficient?
5. How are circuit breakers similar to fuses? How are they not
similar? Which one is more convenient to use?
6. List the various uses of an electromagnet
Answers
Answer:
1.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.
2.The reason we want to build circuits is to make electricity do useful things for us. The way we do that is by putting things in the circuit that use the current flow to light up, make noise, run programs, etc.
3.When electric current is passed through a conductor, it becomes very hot due to which it emits light. This is called lighting effect of electric current. For example: electric bulbs, fluorescent lamps, etc.
4.The fluorescent lamps use less energy to produce the same amount of light and can last longer. But, these are difficult to dispose of due to mercury filling. ... As compared to incandescent bulbs, CFLs have a longer lifespan up to 10000 hours, are more energy efficient, and have higher luminous efficiency.
5.Fuses and Circuit Breakers both serve the same purpose – which is to protect electrical circuits by preventing overloads that can cause fires. ... Fuses can be quicker for interrupting the flow of power, but when they melt they must be replaced; circuit breakers on the other hand just need to be reset.
6.Electromagnets are very widely used in electric and electromechanical devices, including:
Motors and generators.
Transformers.
Relays.
Electric bells and buzzers.
Loudspeakers and headphones.
Actuators such as valves.
Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.
MRI machines.
Explanation:
hope it is helpful