In resistance welding, a pair of electrodes presses two sheets of metal together. Heat from the passege of current melts the metal sheets where they are in contact between the electrodes to form a weld. What potential difference is needed to produce a current of 10kA when the resistance of the metal between the electrodes is 0.20milli ohms?

Answer 1

current= V/R
V= R*I= 0.20*10k=2009volts
check my thinking.

Answer 2

V = I * R = 10*10^3 * 0.2*10^-3 = 2.0 Volts.