Is it possible to measure a voltage beyond what your multimeter is capable of measuring by measuring the amps providing you know the resistance? Just wondering if the voltage would still harm the meter.
Meter specs tend tend to use 250v or 500 V rated parts. Exceeding these ratings by some margin may result is catastrophic failure to other parts when an arc bypasses the part.
There are 10:1 to 1000:1 probes rated to higher specs which must be observe/chosen.
If you know the resistance of the meter you can add resistance to increase the voltage range. if the meter has 1M resistance on the 1000v range adding 9 more 1000V rated 1M resistors in series would allow measurement of up-to 10KV, 2kV in would read 200V after the modification. but if you need to be safe, buy a proper high-voltage probe, don't try to build your own.