Resistors in series to increase maximum Voltage
So can I just use a 1 megohm resistor for example that's rated for 200 V and then add a 10 ohm resistor that's also rated for 200 V in series to get a maximum voltage of 400 V and then connect that to 350 V without any problems?




simulate this circuit &ndash; Schematic created using CircuitLab
Figure 1. A quick look with the simulator shows the problem.
No. The voltage dropped across across each resistor is proportional to its resistance. R1 will have 349.9965 V across it (assuming it's exactly 1 MΩ).