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Why is the Voltmeter Connected in Parallel?
The function of a voltmeter is to measure the voltage in an electrical circuit by measuring the difference in potential between two points. In the case of an AC circuit, it measures the root mean square values at different points through time.
The voltage metre or Voltmeter is connected in parallel to indicate that the current measured by it is being fed back as a potential difference. Parallel circuits are often connected in this manner so that the voltmeter, battery and bulb will form one circuit while all other parts of the circuit are connected in series.
The voltmeter is connected in parallel to stop it from drawing any current itself. So that it does not affect the resistance of the circuit and can have full voltage and high resistance.
If we connect a voltmeter in series instead of parallel, it will result in a decrease in the amount of electric current going through the circuit.
