Voltmeter resistance high or low

Hence, voltmeter have very high resistance, and an ammeter have low resistance for accurate measurement of potential difference and current should be used.

1. Should voltmeter have high or low resistance?
2. Why the resistance of voltmeter is high?
3. How high is the resistance of a voltmeter?

Should voltmeter have high or low resistance?

(The voltmeter should have very high resistance so that it doesn't allow current to flow through it and thus change the currents in the rest of the circuit.)

Why the resistance of voltmeter is high?

A voltmeter measures the voltage difference between the two different points (say, on different sides of a resistor), but it should not change the amount of current going through the element between these two points. So it should have very high resistance so mat it doesn't draw current through it.

How high is the resistance of a voltmeter?

The resistance of an ideal voltmeter should be infinite. This is because a voltmeter is connected in parallel i n a circuit across resistor/resistors.