leftimage for poohprod.ru

Ohm’s law Calculator


You can find the calculator at the bottom of this article. We’ll start with an introduction to this topic.
The Ohm’s law (after Georg Ohm) defines the relationship between voltage (V), current (I) and resistance (R). Power (P) relationships appear as a logic consequence of the others.

One ohm is the resistance value through which one volt will produce a current of one ampere. The Ohm’s formula is V = IR.

Voltage (V) is the difference in electrical potential between two points in an electronic circuit, and it is measured in volts (V).

Current (I) is a flow of electrons on a conductor, and it is measured in amperes (A).

Resistance (R) determines how much current will flow through an electrical device. Resistors are used to control or limit voltage and current levels. A high resistance will allow a small current to flow. A low resistance will allow a larger current to flow. Resistors are measured in ohms.

Power (P) is the voltage multiplied by the current, and it’s measured in watts (W).

Ohm's law pie chart - electrical calculations

Ohm’s law Pie Chart

Electrical Calculations

Let’s say that a 12V car battery is connected to a 3 ohm light bulb. What is the voltage measured at the light bulb?

We can use our calculator and enter

V = 12.0 V
R = 3.0 ohms

We get

I = 4.0 A

Parallel Resistors

Our calculator can also be used to find out the equivalent resistor of up to three resistors in parallel. For example, three 20-ohm parallel resistors are connected across a 120 V power source. What is the current of this circuit?

We use the section on parallel resistors and enter

R1 = 20 ohms
R2 = 20 ohms
R3 = 20 ohms

we learn that the equivalent resistor is Req = 6.7 ohms.

Now, we use the formula I = V/R and enter the known values of voltage and resistance

V = 120 V
R = 6.7 ohms

and we discover that the total current flowing is I = 17.91 amperes.


Please enable JavaScript codes on this page. The calculator uses them.



Parallel Resistors

R1 = ohms
R2 = ohms
R3 = ohms

Req = ohms

V = I R

I = A
R = ohms

V = V

V = P/I

P = W
I = A

V = V

V = sqrt( PR )

P = W
R = ohms

V = V

I = V/R

V = V
R = ohms

I = A

I = P/V

P = W
V = V

I = A

I = sqrt( P/R )

P = W
R = ohms

I = A

R = V/I

V = V
I = A

R = ohms

R = V2/P

V = V
P = W

R = ohms

R = P/I2

P = W
I = A

R = ohms

P = VI

V = V
I = A

P = W

P = V2/R

V = V
R = ohms

P = W

P = I2R

I = A
R = ohms

P = W



From 'Ohms Law Calculator' to home

From 'Ohms Law Calculator' to Free Online Calculators


Top

Creative Electronic Projects

Electronic Experiments

Electrical Calculations




footer for ohm's law calculator page







































































































Related pages


cramers ruleshow much is a salvage vehicle worthmatlab conv examplematlab 3d surface plotpolar compasscalculate factorialscalculate depreciation exceldelta diracaonline hypotenuse calculatorgrowth and decay calculatorpiecewise continuous function examplesbinary to gray code conversion methodmatlab x axis rangeexamples of harmonic serieshow to plot functions in matlabsalvage value equationvertical line matlabmatrix animated movieexpansion of sine serieshow to find half life calculuspermutations and combinations calculatorsurfcsquare footage calculator feet and inchesrc circuit analysis examplesstring concatenation matlabcombinational logic circuitpascal triangle formula calculatorhow to define step function in matlabhow to graph in matlabonline definite integral calculatordurer squarehow to plot functions in matlabdecimal to octsimple recursive algorithmsmatlab programming tutorialsdouble factorial calculatoreir calculatorfinding polynomial rootsconvert cartesian coordinates to polarnonlinear simultaneous equations solvermatlab sample codesfminbnd matlabhow to write a for loop in matlab5 band resistance color code calculatorscilab programmingprogram for multiplication of two matrices in cgoogle calculator factorialmatlab log10hex to binary tablematlab books for beginnersbisectional methodplot mean and standard deviation matlabsimulink to matlab code conversioninverse function matlabintegrals in matlabascii to binary chartmatlab regressmatlab 3d surfacetime constant calculator rccontinuous interest rate calculatormatlab shadegraphing a piecewise functionbest matlab bookmatlab 3d plot colorhow do i calculate square feet from inchesgraphing a piecewise-defined functionrect function matlabhow to plot a 3d graph in matlabmaclaurin expansionhalf life formula calculushow to convert polar to cartesianbinary to ascii charthexadecimal conversion to binarygcd codeswitch statement matlab