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What is a devise that turns a circuit off and on?
A switch is a device that can be used to turn a circuit off and on. When the switch is in the "on" position, current can flow through the circuit, and when it is in the "off" position, the circuit is broken and current cannot pass through.
Should current be measured with the power off the circuit?
It will not be possible to measure current unless the circuit is powered and operating.
Circuit breakers are used for what?
Circuit breakers prevent excessive current from flowing in the circuit by "tripping" when the current exceeds the circuit breaker rating. This causes the current to be cut off, and is used to protect the wiring as well as the appliances.
In a circuit the purpose of a switch is to?
In a circuit, the purpose of a switch is to control the current flow to the load by opening the circuit (off) or closing the circuit (on). When the circuit is open, the is no complete loop through which the current can flow. When the switch closes the circuit, it restores the loop, and thus allows the current to flow.
How does the turn off circuit on a Class B type thyristor work?
The Class B type of commutation circuit uses an LC circuit in parallel with the thyristor. During initial power up, the capacitor C charges to the supply voltage (Edc) and the thyristor is OFF. The initial charging current of the LC branch flows thru the load. When the thyristor is fired, the supply DC voltage is applied across the load, and the voltage across the LC branch goes to almost zero (the forward drop of the thyristor). Then the LC circuit enters a resonant discharge with an angular frequency of the square root of the inverse of LC product. The LC resonant cycle supplies a peak forward current thru the thyristor of Edc times the square root of C/L. This peak current must exceed the load current in order to effect the turn-off of the thyristor during the second half of the discharge resonant cycle. This peak current is usually designed to be twice the load current. The thyristor is reversed biased (and turned OFF) during the first quarter cycle of this second half of the resonant cycle - thus allowing the supply to recharge the capacitor in the LC parallel branch. Then the cycle can repeat.
When a switch in an electrical circuit is turned off what will happen?
Closing a switch in an electrical circuit will complete the circuit. The supply voltage will then be applied to that circuit, and current will flow through that circuit.
What trips a circuit breaker and causes it to shut off the flow of electricity?
A circuit breaker trips and shuts off the flow of electricity when there is an overload of current or a short circuit in the electrical circuit.
What is the range of a circuit breaker?
The range of a circuit breaker refers to the maximum amount of electrical current it can safely handle before tripping and shutting off the circuit. This range is typically measured in amperes (A) and varies depending on the specific type and rating of the circuit breaker.
Which insulator does a switch use to cut off the current in a circuit?
A switch uses an insulator called an "air gap" to cut off the current flow in a circuit. When the switch is turned off, it creates a physical break in the circuit, preventing electricity from passing through.
Will a circuit breaker give off less amperage?
A circuit breaker does not give off amperage. A circuit breaker allows a flow of current up to the rating of the breaker. Any current higher than that of the breaker's rating will open the breaker's contacts and stop the flow of current.
What type of circuit allows part of the circuit to be switched off?
A parallel circuit.
What paths can electricity take through a series circuit or a parallel circuit?
electricity take every possible path which follow closed path across its source.AnswerIn a series circuit, there is only one path for current to flow; the same current passes through each component.In a parallel circuit, there are multiple paths called 'branches', and the sum of the individual branch currents is equal to the current drawn from the supply.
