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What is the voltage in a circuit with a resistance of 12 ohms and a current of 20 amp?
Wiki User
∙ 13y ago
We know that there are three formulae for stating the relationship between voltage (E or V), current (I) and resistance (R) in an electrical circuit. All three of these formulae say the same exact thing, but are written to isolate each of the different variables and express that variable in terms of the other two. Here are the formulae:
E = I x R, I = E / R, R = E / I
In written English, these formulae state that voltage equals current times resistance, current equals voltage divided by resistance, and resistance equals voltage divided by current (respectively).
To find the voltage in a circuit when given the resistance and the current, we apply the first listed expression:
E = I x R, and inserting our known variables, we have E = 20 amps x 12 ohms = 240 volts. A circuit with a resistance of 12 ohms and a current of 20 amps has 240 volts applied to it.
Wiki User
∙ 13y ago
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∙ 14y agoPrices vary through out the country. You will have to get a proper quote from at least three electrical contractors in your area. This will let you know the cost and if all three contractors are in the same cost area you can feel confident that you are not being overcharged. Usually you should not be charged for a quote but check before you ask the contractor to come out to see the job.
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Wiki User
∙ 15y agoIf you know the voltage, you can calulate the resistance. R = V / I.
Wiki User
∙ 15y agoI=E/R, thus current (amperes) = voltage (volts) divided by resistance (ohms).
12/20 = 0.6 ampere
Wiki User
∙ 15y agoOhm's Law is R = V/I, so the total resistance will be 12 V divided by 3 A.
Wiki User
∙ 13y agoR=12
I=20
obey ohm's law
V=IR
v=20 multiply by 12
v=240
Wiki User
∙ 12y ago120 V.
Wiki User
∙ 9y ago6 amps
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How much current is in a circuit that includes a 9-volt battery and a bulb with a resistance of 12 ohms?
Current = voltage/resistance If those are the only components in the circuit, then Current = 9/12 = 0.75 Ampere = 750 mA
If a circuit contains a 1.5 volts battery and a bulb with a resistance of 3 ohms. calculate the current?
Use Ohm's Law. Solving for current:I = V/R (current = voltage / resistance)
If the voltage is 12 volts and the resistance is 3 ohms what are the amps in this circuit?
Using Ohm's law, we can find the current (I) in a circuit where 3 ohms is the resistance (R) and 12 volts is the appllied voltage (V). [(E) means energy]I = V / R = 12 / 3 = 4 amps.Visit this link http://www.csgnetwork.com/ohmslaw2.html for making Ohm's Law calculations.
A circuit contains two 1.5 volt batteries and a bulb with resistance of 3 ohms calculate the current?
If the batteries are placed in series then your current would be 1 amp, if the batteries were in parallel then 0.5 amps. Voltage is common in parallel and additive in series. 1.5v + 1.5v = 3v (series) / 3 ohms = 1amp 1.5v (parallel) / 3 ohms = 0.5amps Current = Voltage divided by Resistance
What is the voltage of microwave with a resistance of 5 ohms and current flowing of 10 amperes?
It looks as if you can use Ohm's Law to calculate this: V=IR (voltage = current x resistance).
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Ohm's Law: Current = Voltage divided by resistance 9 volts divided by 3 ohms = 3 amperes.
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What is the term for the relationship of voltage current and resistance in simple electrical circuit?
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How much resistance is in the circuit if it uses a current of 10ma?
Just use Ohms Law: V=IR, that is, voltage (in Volt) = current (in Ampere) x resistance (in Ohms).
How do you find resistance when you have current and resistance total?
If you are looking for the resistance of each resistor in either a series circuit or a parallel circuit you must measure the current I and the voltage V for each resistor. Then calculate its resistance using Ohms Law R = V / I where I = current (Amps), V = voltage (Volts) and R= resistance (Ohms).
What is the value of the current if an electrical circuit has a voltage of 50 V and a resistance of 5 Ohms?
Ohm's law: Current is voltage divided by resistance. 50 volts divided by 5 ohms = 10 amperes.
What is the current when a voltage of 36 volts is applied to a circuit with a resistance of 6 ohms?
Six amperes. Use Ohm's law: the current is the voltage divided by the resistance
