When checked with an ohm meter an open resistor reads-
Infinite
When you divide any voltage by zero current (R = V/0), the result is theoretically infinite resistance. An ohm meter is designed to interpret the inability of current to flow (or extremely low current) when a voltage is applied as a very high or "infinite" resistance reading. Therefore, when checked with an ohm meter, an open resistor will read infinite.
Important Questions from Measurement of Resistance
Which of these instruments is used for measuring the insulation resistance?
A ______ is a combined unit of ampere meter, voltmeter and ohmmeter.
A zero to 300 V voltmeter has an error of 2% of the full scale deflection. If the true voltage is 30 V, then the range of readings on this voltmeter would be
The operating voltage of a megger is about
Which instrument is used to measure the high resistance?
