Question

V=IR is Ohm’s law, explain and give a practical example of each variable. Which one of the variables can do harm when in direct human contact?

Answer 1

Sol:

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Ohm's law : It states that potential accross a wire is directly propotional to the current, provided temperature and area of cross section of the wire should remain constant.

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Real world example:

V (voltage) : it is provided by the battery

I (current) : it is rate of flow of charge, like water flows.

R (resistance) : it opposes the current. like heater wire.

Current is the variable which can do harm when in direct human contact.