What happens when voltmeter is connected in parallel?

Answer 1

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 (*)

Answer 2

voltmeter is a device used for measuring voltages across a circuit, in order to measure voltages accurately we 've to connect it in parallel to the circuit because of the fact tht voltge is same in parallel and divides in series so if connected in parallel it will show the exact volt as in circuit but if connected in series the voltages we be the sum of tht drops in circuit and in voltmeter.

Another Answer

The clue is in the word, 'potential difference'! A voltmeter measures the potential difference between two different points in a circuit and, so, it must be connected between those two different points. It is, therefore, in parallel with the part of the circuit between those two points.

Answer 3

It will allow to read the voltage to reflect the present current flow

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When a voltmeter is connected across a load, it will read the voltage dropped across the circuit load. If there is no load in the circuit, the meter will read the supplied voltage to the circuit.

Answer 4

By definition a VM measures the EMF - voltage - between two points.

Even if the two points represent a series circuit the very act of placing the VM between the two points creates a parallel circuit - the original circuit paralleled by the VM circuitry.

Answer 5

You measure Resistance with an Ohmmeter not a Voltmeter. If the unit is a Multimeter then make sure that it is set to the correct Ohm Range. The only way to measure resistance or voltage is to attach the meter in Parallel to the Load being measured. That is the way it works. In series you would get an erroneous reading.

Answer 6

We connect a voltmeter in parallel to a circuit in order to measure the potential difference between two terminals