Anytime you ask electricity to do anything for you. Turn on light bulbs, start a car, run ann engine, watch TV.
Anytime electrical power is used.
they are used for more power than a series circuit so you should use this one.
Sure. If you want sound when the circuit is energized, use a buzzer. If you want a visual indication when the circuit is energized, use an LED.
to complete circuit
A GFCI can not be used on a three wire branch circuit. It has to be on a single two wire circuit.
This really depends on the scenario. What type electrical circuit are you talking about.
To open and close the circuit.
they are used for more power than a series circuit so you should use this one.
Sure. If you want sound when the circuit is energized, use a buzzer. If you want a visual indication when the circuit is energized, use an LED.
This project will require a parallel circuit, not a series circuit.
to complete circuit
A parallel circuit
No, it is not safe to use two 20 amp circuit breakers to protect a 40 amp circuit. Circuit breakers are designed to protect the wiring in a circuit from overheating, and using a higher amperage circuit breaker than the wiring is rated for can lead to overheating and potential fire hazards. It is important to use the correct size circuit breaker for the amperage rating of the circuit.
for switching and protect the circuit in case of fault.
The load that is connected to the circuit is what draws the power of the electrical circuit.
When the circuit needs the electrical property of resistance, of course.
to complete the circuit you have to add 1 light bulb.
no .............. use multisim,pspice,proteus,etc for circuit analysis.eagle support only circuit synthesis..