A man foolishly tries to fish a burning piece of bread from...

A man foolishly tries to fish a burning piece of bread from a toaster with a metal butter knife and comes into contact with $120-\mathrm{V}$ ac. He does not even feel it since, luckily, he is wearing rubber-soled shoes. What is the minimum resistance of the path the current follows through the person?

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Key Concepts

Ohm's Law

Ohm's law is the fundamental principle that relates voltage, current, and resistance in an electrical circuit. It states that the current passing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance, expressed by the equation I = V/R. This relationship is used to determine the amount of current that flows for a given resistance and applied voltage.

Human Body Electrical Resistance

The human body has a natural resistance to electrical current that can vary widely depending on factors such as skin moisture, pressure, and contact area. This resistance plays a critical role in determining how much current flows through the body when it comes into contact with a voltage source. In electrical safety, understanding body resistance is essential, as it informs us on the levels of current that might be perceptible or potentially dangerous, and why insulating materials like rubber-soled shoes can reduce current flow and help protect against electric shock.

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