Answer:
Maximum possible voltage without shock across the thumb and index finger with a dry-skin = 33.88 V
Maximum possible voltage without shock across the thumb and index finger with a wet-skin = 0.135 V
Explanation:
From Ohm's law
V = IR
For the maximum possible voltage without shock for dry skin, the
R = 4.4 × 10⁵ Ω
I ≤ 77 μA
I ≤ 77 × 10⁻⁶ A
V ≤ 4.4 × 10⁵ × 77 × 10⁻⁶ = 33.88 V
For the maximum possible voltage without shock for dry skin, the
R = 1750 Ω
I ≤ 77 μA
I ≤ 77 × 10⁻⁶ A
V ≤ 1750 × 77 × 10⁻⁶ = 0.13475 V