A person with body resistance between his hands of 10KΩ accidentally grasps the terminal of a 14-KV power supply.If the internal resistance of the...

The current 'I' that flows when a voltage 'V' is applied
across a resistor 'R' is given by I = V/R.

Here, the total
resistance is 10000 + 2000 = 12000 ohm.

The voltage applied
across this resistance is 14000 V.

This makes a current
equal to 14000/12000 = 7/6 amp flow through the person's
body.

The power P dissipated is given as P =
V^2/R

We are only interested in the power dissipated
through the person's body. This is given by (14000)^2/10000 = 19600
W

The current flowing through the resistance
is 7/6 amp and the power dissipated through the person's body is 19600
W