Hairdryers work by blowing heat that is generated by exposed, high-resistance wires.

(a) If a woman using a hairdryer comes in direct contact with the 110-V wires, what is the current that travels through her if she is dry and has a resistance of 500,000 Ω?

(b) If she is wet, the resistance of her body can drop as low as 100 Ω. What is the current that passes through her body at this resistance? (Death can result when a current of 0.07 A flows through a person’s body for more than 1 s.)