What is the voltage in a circuit with a resistance of 12 ohms and a current of 20 amp?

Answer 1

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.

Answer 2

Prices 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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Answer 3

If you know the voltage, you can calulate the resistance. R = V / I.

Answer 4

I=E/R, thus current (amperes) = voltage (volts) divided by resistance (ohms).

12/20 = 0.6 ampere

Answer 5

Ohm's Law is R = V/I, so the total resistance will be 12 V divided by 3 A.

Answer 6

R=12

I=20

obey ohm's law

V=IR

v=20 multiply by 12

v=240

Answer 7

The voltage in the circuit can be calculated using Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R). Therefore, V = I * R = 20 A * 12 Ω = 240 volts.

Answer 8

120 V.

Answer 9

6 amps