An ac circuit is rated 240 v.?

Question

What is the maximum voltage?For an appliance in an ac circuit of maximum current of 2 amps,what is the effective current?

Answer 1

If the line is rated for 240 volts then the maximum volts you will get is 240 volts. In the US voltage values can vary by as much as 10%, but the rated line voltage is always the maximum voltage on that line.

Wattage = Voltage X Amperage.
At 2 amps of current your power consumption =
240 volts X 2 amps = 480 watts.

Power is sold in kilowatt hours so the power requirement would be 0.48 kilowatt hours. Let's assume a cost of 10 cents per kilowatt hour. That means it will cost you =
0.1 cents X 0.48 kilowatts = 0.048 or 5 cents per hour.

Charlie M is correct normal power lines have between 120 and 110 volts. However, power lines for washers and dryers use twice that voltage which would be 240 volts.

So your question makes perfect sense if you are talking about a heavy power using machine like your washer or dryer.

Answer 2

I don't understand your question. In an AC circuit, the measured voltage, as I recall is 66.67% that of the peak voltage. At 240 volts and 2 amps, you would draw 480 watts. Watts = Volts x Amps. I hope this helps you.

Answer 3

A sine wave with an RMS value of 240v has a peak value equal to the RMS value times the square root of two, or 339.2V. For appliances, the name plate "maximum" current is the effective RMS current. For a simple resistor the maximum current will be proportional to the RMS current the same as with voltage.

Answer 4

A normal AC is rated 110-120 volts. The voltage and amperage would be the same.

Answer 5

normally an AC circuit is 110-120 volts. Your question doesn't make any sense. The voltage does not change because of the (current or amperage) they are the same thing.