why voltmeters have more resistance?
Answers
In order to avoid loading effect, voltmeter has high resistance
good evening mate..
A voltmeter measures the voltage difference between two different points (say, on different sides of a resistor), but it should not change the amount of current going through the element between those two points. So, it should have very high resistance so that it doesn't "draw" current through it..
More precisely..
A voltmeter is always coonected in parallel across a device to measure the voltage across it. Now, if the voltmeter has low resistance, then the current will split and flow through the voltmeter also, thereby giving incorrect or undesired results across the device. Hence, it has a high resistance so that negligible current flows through it.
Hope it helps..