Question

Calculate the current in mA through the person, given the voltage of the source to be 120 V and the resistance of the appliance to be 2,552 Ohms. Let the resistance of the person be 96 Ohms which is a low but very possible with wet skin or sweaty hands.

Answer 1

Answer:

90.6 A

Explanation:

From ohm's law,

V = IR.................... Equation 1

Where V = Voltage of the source, I = current through the person, R = Total resistance

Make I the subject of the equation,

I = V/R............... Equation 2

From the question,

R = Resistance of the appliance + Resistance of the skin

R = 2552+96 = 2648 ohms.

Given:

V = 240 V, R = 2648 Ω

Substitute into equation 2

I = 240/2648

I = 0.0906 A

I = 90.6 mA.

Hence the current through the person = 90.6 A.