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When you stepup ac voltage the current drops.What will happen with CURRENT if DC is stepped up?
Wiki User
∙ 15y ago
WHEN YOU STEP UP THE VOLTAGE AND THE LOAD IS THE SAME MORE CURRENT WILL FLOW NOT LESS. AND THAT WILL HOLD TRUE FOR DC AS WELL. IF THE LOAD REMAINS THE SAME AND YOU INCREASE THE CURRENT AC OR DC THE VOLTAGE WILL INCREASE
Wiki User
∙ 15y ago
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What type of device is used to increase to decrease the voltage of an electric current?
In an alternating current circuit the voltage can be stepped up ordown efficiently with a transformer.
What type of device is used to increased or decrease the voltage of an electric current?
In an alternating current circuit the voltage can be stepped up ordown efficiently with a transformer.
What type of device is used to decrease or increase the voltage of an electric current?
In an alternating current circuit the voltage can be stepped up ordown efficiently with a transformer.
What type of device is used to increase or decrease the voltage of an electric current-?
In an alternating current circuit the voltage can be stepped up ordown efficiently with a transformer.
Why you use ac for transmission?
AC is used for transmission because AC can be stepped up in voltage with a transformer, and then stepped back down at the destination. Since power is voltage times current, a higher voltage requires a smaller current to achieve the same power. Since the current carrying capacity of wires is based on wire size, a smaller wire size can be used to transmit the lower current.
Why is the voltage stepped up before transmission?
Voltage is stepped up during transmission to reduce the power loss during transmission due to resistance. Power is a product of Voltage*Current, and losses due to resistance are directly proportional to the square of the current. Now when we increase the voltage , keeping the power constant, the subsequent current reduces.. thus in turn reducing the transmission losses.
What is a current transformar?
A transformer is a device that converts electrical power to a different voltage and current potential. You may have one at your home that converts the 110-120 volt wall output to 6-12 volts. The input voltage is stepped down to a lower voltage; the input current is also stepped up by the same factor as the voltage is stepped down.
What happens to the current if the potential difference is stepped-up in an ideal transformer?
In an ideal transformer, if the voltage is stepped up by a factor of x, then the current is stepped down by a factor of x. The end result is that the power, P=VI, is not changed. Again, this is in the ideal case.
Are high voltage transmission lines 60Hz like the wiring in a house?
Yes, the frequency stays the same. Only the voltage and current change as the voltage is stepped down.
What is a relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
What is the relationship among voltage current and resistance in a circuit?
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
Your usage 415v why getting 33kv?
If you want 415 volts, and you are getting 33,000 volts something is horribly wrong. Voltage is stepped up / stepped down for transmission to "load centers" (you) because of the "I^2 R" losses. Power = current squared times the resistance. The resistance of the conductor that is carrying your power is finite and cannot be made to be zero (unless you're using superconductors), so to minimize power loss incurred by transmission to you, the current must be decreased. This is accomplished by stepping the voltage up to a higher value (since power = voltage / current, the same power at a higher voltage can be delivered with a smaller current, thus less transmission loss). Voltage and current are stepped up/down using transformers. I hope this covers your question.
