When measuring a voltage with a DMM does the the DMM see the current across the two points probed?
For example, if I have a circuit that draws 2.5Amps across a load. If I measure the voltage across that load, do I need to worry that I will damage the DMM because of the 2.5A current flowing across the load?
No. The DMM is a high impedance when measuring voltage, so very little current will flow into it. If a significant current DID flow, that would mess up the voltage measurement.
No. The DMM is a high impedance when measuring voltage, so very little current will flow into it. If a significant current DID flow, that would mess up the voltage measurement.
It depends on the size of the load resistor. If he has a 1 Kohm load resistor, 2.5A would give him a 2500 volt potential across the resistor. that could exceed most voltmeters max voltage.
:lol:
It depends on the size of the load resistor. If he has a 1 Kohm load resistor, 2.5A would give him a 2500 volt potential across the resistor. that could exceed most voltmeters max voltage.
:lol: