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A MOSFET

* has: GATE, DRAIN, SOURCE connections. Not GND, not "-", not "+"

* may be N-Ch or P-Ch

* may have internal Gate protection or not.

***

In most cases the gate should be very high ohmic with respect to SOURCE. In the high Megaohms.

I´d call any value below 1MOhm suspicious.

For sure the measurement voltage (by DVM) need to be within the MOSFET´s specification.

Also mind: Gate is a sensitive input. In worst case an ESD pulse (just by connicting to a DVM) may immediately kill the MOSFET. Thus be sure to keep on standard ESD protection rules.

Klaus