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How do you determine the amperage given the voltage and power dissipated?
Wiki User
∙ 16y ago
Like Ohm's Law, the formula for calculating power is a simple product of two quantities. It is given by the formula P = VI, where V is the voltage in volts and I is the current in amperes (or simply amps). So, if you know the value of any two of the quantities, you can easily calculate the third with simple arithmetic. For example, if the current flowing through a resistor is two amps and the voltage drop across that resistor is five volts, the power dissipated by the resistor is, P = VI = 5 volts * 2 amps = 10 watts. If you are given the power and the voltage, you can easily find the current. For example, if you are told that the voltage drop across a resistor is five volts and is dissipating 10 watts, the current through the resistor is 10 watts/5 volts = 2 amps.
Wiki User
∙ 16y ago
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What will the voltage drop on a 1.5 mm cable run 1.5 kilometres be?
This is a voltage drop question. The amperage of the circuit must be given. Without the load amperage this question can not be answered.
How do you determine if the Primary voltage is unknown but Secondary voltage is given?
If a secondary voltage is given across a particular resistive load in a series of known resistive loads, multiply the voltage by the ratio of the total load to the measures load to get total voltage. Example: You have a series of a 200 ohm resistor to a 100 ohm resistor. The votage measured across the 100 ohm is 2 volts. 200 + 100 = 300. 300 / 100 = 3. 2 X 3 = 6. Total Voltage in the circuit is 6V
How much electricity is consumed in 208 HP motor for one hour?
To answer this question the voltage and amperage of the motor must be given.
What is the output of a light ballast?
Fluorescent electronic ballasts have a voltage to amperage ratio chart on their face. Use this chart by selecting the voltage you are using and the corresponding amperage, then multiply the two numbers together for your wattage. Some fixtures come with more than one ballast, so you will need to take the wattage of all applicable ballasts for any given fixture to obtain the total wattage for the fixture.
How many watts is in 9 volts?
You can't convert volts to amperes. Those are quite different units; that would be like converting, say, meters to seconds.
How many amps do you need to power 1hp?
The amperage of a motor is governed by the voltage that the motor operates on. Without a voltage given, an answer can not be given.
What is the voltage loss over 400 feet?
To answer this question the supply voltage and the amperage of the load must be given.
What will the voltage drop on a 1.5 mm cable run 1.5 kilometres be?
This is a voltage drop question. The amperage of the circuit must be given. Without the load amperage this question can not be answered.
How do you determine the amperage given the voltage and the wattage?
Divide the power in watts by the voltage in volts to get the current in amps.
How do you determine if the Primary voltage is unknown but Secondary voltage is given?
If a secondary voltage is given across a particular resistive load in a series of known resistive loads, multiply the voltage by the ratio of the total load to the measures load to get total voltage. Example: You have a series of a 200 ohm resistor to a 100 ohm resistor. The votage measured across the 100 ohm is 2 volts. 200 + 100 = 300. 300 / 100 = 3. 2 X 3 = 6. Total Voltage in the circuit is 6V
What size wire 100 kva transformer?
Wire sizing of a feed conductor is based on the amperage that a device draws. To calculate amperage from KVA a voltage of the supply has to be stated. Without this voltage and whether the transformer is single or three phase an answer can not be given.
What size wire for 55kw?
Wire is sized by the amperage that it will carry. 5 kW is 5000 watts. The equation to find watts is W = Amps x Volts. The equation to find amps is Amps = Watts/Volts. As you can see a voltage is needed to calculate the amperage. Once the amperage is stated, the wire size can be given for that particular amperage.
How do you calculate the size of cable for 1000kw generator?
Without knowing the nominal voltage, you cannot determine the load current and, therefore, cannot determine the cable size. <<>> The sizing of cables or conductors is based on the amperage that the conductor can safely carry. The formula for amperage is I = W/E. Amps = 5000/Volts. With out a voltage stated an answer to this question can not be answered. When you calculate the amperage, re-ask your question for a conductor size for a given amperage.
What size armoured copper cable needed for 75 kW motor?
Wire sizing is based on the motors full load amperage. The amperage can be calculated but a voltage has to be stated. I = W/E. Amps = Watts/Volts. Restate the question with a voltage and an answer can be given.
How much electricity is consumed in 208 HP motor for one hour?
To answer this question the voltage and amperage of the motor must be given.
How do you wire a three phase cord cap?
To answer this question the voltage and the amperage of the cap must be stated. Then the termination letters can be given.
How do you determine ratio if only second voltage is given?
You can't. You need to know both the secondary and the primary voltages to determine the voltage (or turns) ratio.
