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This is a tough question to answer because you've forgotten to include WHAT electrical property you're trying to measure.
If you are trying to measure current through a closed, complete circuit with a multimeter, then yes. You must physically disconnect the circuit at the point you wish to measure, and then re-complete the circuit by connecting the leads of your multimeter to the points you just disconnected. (Please be sure the circuit is not energized before you disconnect the circuit!)
If you are trying to measure a voltage difference, then no. Just place the leads of your multimeter on the two points you wish to measure the voltage between.
As always when dealing with electricity, its safety first. Please do everything you can to protect yourself from electrical shock, especially if you're dealing with 120V/240V line voltages in a house.
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Must an electric circuit have an opening for the electricity to enter through?
yes
What is the definition of a manual reset circuit breaker?
A manual circuit breaker must be reset by hand, as opposed to an automatic circuit breaker, that may be able to reset itself once it cools down.
True or False The voltage rating of a fuse can be greater than the circuit voltage?
True. The voltage rating of a fuse must be greater than the circuit voltage.
What happens when voltmeter is connected in parallel?
An ideal voltmeter has infinite impedance(resistance). If you were to break the circuit and put it in series and try to make a measurement, it is easy to see that the circuit would act completely differently and your measurement would be wrong. An ideal ammeter is always connected in series because it has 0 resistance, so all of the current would flow through it, and not through the wire that you are trying to measure the current of.A better answer though is to think about what you are trying to measure. When you say something is 3 Volts, that is a difference between the voltages at two different points. If you want to see what the voltage drop across a resistor is, for example, you need to put one probe of the voltmeter on one side of the resistor and the other probe on the other side of the resistor. That setup is simply called being in parallel.Voltage is potential difference between two points, hence measured across or in parallel, where as current is measured in series since current flows (*)
Why meter bridge can't be used to measure low resistance and high resistance?
used to measure low Resistance since it must reach a null.
Why remove resister from circuit to measure resistance?
a meter uses its own supply to measure resistance. you dont have to remove the resistor from the circuit but you must isolate it from the circuit supply to get an accurate reading.
What is the function of the voltmeter in an electric circuit?
A voltmeter is a device to measure the voltage in a electric circuit, and must have be connected in parallel to it.
When designing an ammeter you must take into consideration what?
How well it can measure current in an electric circuit and up to how many amps will it need to measure.
When you measure voltage with a voltmeter you must break open the circuit and connect the meters test leads in series with the other circuit components?
Sounds more like you're trying to measure resistance...
What must voltage be?
Voltage is a measure of the E.M.F (electromotive force) which drives current around a circuit.
What scale must a dmm have to measure current in a circuit?
ohms law babe voltage,current & resistance
When measuring current always place any type of meter in series with the circuit--is this true?
No. While it is true that one can measure current at any point in a circuit by breaking the circuit at that point and inserting the meter, not any meter will do it. One must use an ammeter to measure current.
Why is it harder to measure amperage than voltage whit a digital multimeter?
Because to measure amperage you must connect the multimeter in series , in order to do so the circuit must be broken first. In the case with voltage measurements the multimeter probes must be connected in parallel which is far easier because connecting the multimeter this way the circuit will remain intact.
How is current measured in a series circuit?
Current is measured in a series circuit by the use of a multimeter. First, the power source must be attached to the circuit board. The board is attached to the multimeter, then that is attached back to the power source.AnswerCurrent is measured either with an ammeter, or with a multimeter set to measure current. The instrument must be connected in series with the other components in the circuit.
Why meter ampere was connected in series and voltmeter was connected in parallel in a circuit?
An ammeter is used to measure the current through a circuit and thus it must be in series with that load. Also, it's resistance is so low that it cannot be connected in parallel since it will result in a short circuit. A Voltmeter is intended to measure the voltage across a circuit and thus it must be connected in parallel. It has a very high resistance such that connecting it in series with a circuit will lender the circuit useless or inoperative.
Why must resistance never be measured in an active circuit?
First of all, in an active circuit, there are voltages flowing through various nodes. If you try to measure the resistor, those voltages will cause error in your meter, or may damage your meter. Second of all, even if you cut the power, any loop in the circuit around the resistor will affect the measured impedance. Unless you are certain that only the resistor will see the current introduced by the meter, you must take the resistor out of circuit to measure it.
In relation to electric what does the term fault protection mean?
Protective devices - relays, CT,PT, isolators, circuit breakers are used for fault protection. Fault protection means If there is a fault in the circuit, the circuit must be cut off before any damage occurs due to fault.
