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What is the resistance of a hair dryer that draws 12A when plugged into a 220V line?
Your hair dryer has a resistance of 220/12 = Ohms. (I'm sure you can do the math.)
A resistor has a resistance of 176 ohm How many of these resistors should be connected in parallel so that their combination draws a current of 5 amperes from a 220 volt supply line?
4 resistors were connected in parallel it yields 5A of current from 220V supply.
An electric iron always draws a current of 3.4 amp from the 220v supply line what current will this electric iron draws when connected to 110v supply line?
1.7amp
A clothes dryer uses 5500 w of power when connected to a 220-v ac line how much current does the dryer draw from the line?
5500Watts/220V=25 Amps
What is current in 230v and 50hz line?
Assuming that this question is about adapters for traveling to another country (not USA) then 230V is the equivalent of 220V. Just purchase a suitable adapter.
Is 220V line voltage or phase voltage?
Phase, if you are referring to line, as power line from pole.
Why is energy lost while transmitting low voltages over a transmission line?
Because there is resistance in the line. Pushing a current through a resistance generates heat, which is wasted energy.
What is the amount of power loss on a transmission line that is transmitting 10 MW at 500 kV with 1000 ohms?
Line current = 10MW / 500kV = 20A Assuming the 1000 ohms is the resistance of the entire transmission line, end to end. Power loss = line current ^ 2 * line resistance = 20A ^ 2 * 1000 ohms = 400 KW
Can you say Ohm's law in single line?
Ohm's Law: Voltage = Current times Resistance
How many 176 ohm resistors in parallel are required to carry 5A on a 220V line?
1 resistor has 176ohm resistance (in paralel) ---> given current (I) = 5 A Potential difference (V) = 220 V total resistance = V/I = 220/5 = 44 let the number of resistors be x , 176/x = 44 x = 176/44 = 4 therefore the number of resistors is 4. :)
What action could be taken to improve your performance in your current position by you and by your Line Manager?
What action could be taken to improve your performance
How much current does a line with a voltage of 20 volts and a resistance of 40 Ohms?
The answer is 20 divided by 40, in amps.
