Because these two terms measure two different aspects of electricity, it is not possible to convert between the two. Amperage is a measure of current flow past a given point, while voltage is the potential for current flow.
If electricity were water, the water meter on a house would show a measure of current or amperes (amps), which is the rate at which water flows into a house. If the water came from a tank high above ground, it would have more potential to flow than water from a lower tank. That potential to flow is voltage, measured in volts.
Current induced due to voltage depends on the resistance of load. By Ohm's Law, I=V/R. Hence if load is minimum, current through circuit is maximum.
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What you are asking is kinda like asking how many oranges in an apple. Voltage is the measure of electrical potential. Amperage is the measure of electrical flow quantity. A good
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Volt (n.) a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 amp MORE
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Ampere (A) the SI unit of electrical current. The volt (symbol: V) is the SI derived unit of electric potential difference or electromotive force. The joule (symbol: J) is the SI
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