3000 ohm
It depends completely on the application
what is the resistance value of a healthy earth pit
internal resistance is always infinite in ideal current source .the internal resistance is in shunt with current source
Infinity
It's the Earth leakage resistance (Ohm)
ideal ammeter has zero internal resistance
The resistance of an ideal oscilloscope probe is infinity.
if any thing is ideal then that has no any resistance
Below 5 ohms
every inductor has some resistance. In circuit diagram, ideal inductor is shown in series with a resistor(value being equal to coil's resistance) to make analysis easy.
infinity- so that all the voltage is measured across the component instead of losing some in voltometer circuitry
zero