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An instrument to be able to really tell the value is mandatory that the instrument does not load the circuit making it a false reading or inaccurate

loading effect which means when we give high load that may be cause to some fake or inaccurate of output, this may be known as loading effect....

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15y ago

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Is loading effect more when load impedance is less then source impedance?

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Which ammeter DMM or VOM has the higher loading effect Why?

A digital multimeter (DMM) typically has a lower loading effect compared to a volt-ohm meter (VOM), particularly older analog models. The loading effect refers to the impact a measuring device has on the circuit being measured; a higher loading effect can alter the circuit's behavior. DMMs generally have higher input impedance, which minimizes the current drawn from the circuit, resulting in less loading. In contrast, VOMs, especially those with lower impedance, can significantly affect circuit performance when measuring current.


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What is loading effect in measurement?

The loading effect in measurement refers to the alteration of the quantity being measured due to the act of measuring it. This effect occurs when the instrument used to measure the quantity draws current or energy from the circuit under test, thereby affecting the circuit's performance. It can lead to inaccuracies in measurements, especially in circuits with high impedance. To minimize the loading effect, it is important to use measurement instruments with high input impedance.


What is a description of the loading effect of an ammeter?

loading of an ammeter in a circuit decreases the flow of current,so it has to be calculated to reduce expected errors in the operations


Voltmeter DMM or VOM has the higher loading effect?

The VOM has the higher loading effect, because it has a lower impedance. It is typical for a VOM to have an impedance of 20K ohms per volt while the DMM has a fixed impedance of 10M ohms or 20M ohms.