Why we. Don't measure current in parallel? Why we measure current in series and why we measure voltage in parallel only?
Answers were Sorted based on User's Feedback
Answer / alok
we know that ammeter has ideally zero resistance so if we connect it in parallel with the ckt then it will short ckt the device in which we are measuring the current.
and we know that voltmeter has large resistance so if we connect it in series then it will open the ckt and will prevent the flow of current.
Is This Answer Correct ? | 13 Yes | 1 No |
Answer / hussain
The reason is because current is a measurement of flow - how many electrons are passing through the wire, whereas voltage is a measure of the difference is energies between two points.
In order to measure the amount of electrons passing through a wire, you actually have to place the multimeter within the flow. To measure flow, the multimeter places a VERY LOW resistance into the circuit and measures the voltage drop across that resistance. By using a very low resistance, the multimeter has a negligible impact on the circuit when placed in series.
In order to measure the energies between two points, the multimeter is place in parallel in the circuit with a HUGE resistance and measures the current through the resistance. By using a huge resistance, the multimeter has a negligible impact on the circuit when placed in parallel.
Note: when placing a multimeter into a circuit in series with it turned to the voltage setting or in parallel with the current setting, you will either destroy the multimeter or trigger the circuit breaker or fuse
Is This Answer Correct ? | 2 Yes | 0 No |
What is surge and how is it prevented.
Do you have reference list?
suppose there is gas flow meter I want to know weather meter calibration is done at high pressure or low pressure? pls justify.
Why Ma signal is using for control system?
What is the working principle of oxygen analyzers(zirconium oxide type) used in CFBC boilers?
3 Answers Bajaj, Kohinoor, Wartsila,
TEMPERATURE VARIATION FOR FREQUENTLY.
why 4 to 20 ma? why cant some other range?
What is instrumentation instrumentation engineering?
what is ment by PID controllers? explain with example?
what deference between panel earth and systemearth
how to check the leak in thermowells
Can I calibrate the Electromagnetic Flow Meter on line and How.