Re: Circuit Calculations Mismatched

Thanks for the help guys.

Another inquiry. I'm confused about something. Say I have 2 watts
resistor. If I plug this directly to the ac outlet with voltage of 110
volts. What would happen.

>>From P=VI, P=2 watts, V=110 volts.. I = P/V= 0.0182 Ampere

What does this mean. If I plug the resistor directly into the socket.
Does it mean it will only absort 0.0182 Ampere from the power line.

How do you tie it to V=IR?

What I want to calculate is the wattage that the resistor must be
in order that it won't explode. Also what must be the resistance?

Last. Are there variable resistor that I can use in the power line?

This is just for theoretical understanding and no specific
applicationin mind. Tnx for the assist.

Manny

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