Should the resistance of a voltmeter be high or low
Asked by admin @ in Physics viewed by 286 People
Should the resistance of a voltmeter be low or high give reason
Answered by admin @
Answer:
Resistance of voltmeter should be high.
Solution:
- A voltmeter is always connected in parallel with a circuit since voltage remains constant in parallel connection.
- However, when voltmeter is connected in parallel, some current of circuit might flow through voltmeter thus changing the current in circuit.
- In order to avoid this, an ideal voltmeter has infinite resistance so that it opposes any kind of current flowing through it.
- However, practically infinite resistance is not possible.
- Hence, resistance of voltmeter should be as high as possible to avoid any error in current of circuit.
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