Question

why voltmeter always connected in parallel explain ​

Answer 1

Answer:

The voltmeter aperture provides a considerable amount of resistance so to have minimum effect of it , it is always connected in parallel.

Answer 2

Answer:

Voltmeter is connected in parallel with circuit elements because it is used to measure the device's voltage.

Explanation:

If it's connected in series then it will change the value of potential difference which will minimise the current in the circuit as it has very large resistance and you will get faulty readings.