This electrical force calculator will permit you to recognize the repulsive or attractive force between two revolution charged particles. Continue reading to get a far better understanding that Coulomb"s law, the problems of its validity, and the physical interpretation of the obtained result.

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Coulomb"s law, otherwise recognized as Coulomb"s inverse-square law, explains the electrostatic force acting in between two charges. The force acts along the shortest line the joins the charges. It is repulsive if both charges have the exact same sign and also attractive if they have actually opposite signs.

Coulomb"s regulation is formulated as follows:

F = keq₁q₂/r²


q₁ is the size of the an initial charge (in Coulombs),q₂ is the magnitude of the 2nd charge (in Coulombs),r is the shortest distance in between the dues (in m),ke is the Coulomb"s constant. The is equal to 8.98755 × 10⁹ N·m²/C². This worth is already embedded in the calculator - friend don"t have to remember it :)

Simply input any type of three values right into our electric force calculator to attain the fourth as a result.

To compute the electric potential at a point either because of a solitary point charge or a system of point charges, examine out our electric potential calculator.

Electric fee units

The unit of electrical charge is a Coulomb (symbol: C). It is defined as the charge that is transported through a consistent current that 1 ampere during 1 second. Hence, 1 C = 1 A * 1 s to express in SI units.

If friend don"t remember what an ampere is, head come our Ohm"s legislation calculator.

Conditions for validity

Three main conditions must it is in fulfilled for the electrostatic force calculator come return valid values:

Charges must be stationary - they cannot move with respect to every other.Point charges room assumed. This assumption likewise holds for any kind of charges that room spherical and symmetric. For example, a charged steel sphere fulfills this condition, yet a charged steel box doesn"t.

Interpretation the results

Force derived with the help of ours Coulomb"s regulation calculator deserve to be either optimistic or negative. Positive pressure implies a repulsive interaction in between the charges. An adverse force way that the interaction is attractive.

Did you notification that the default unit for charge in our Coulomb"s legislation calculator is a nanoCoulomb (nC)? that is due to the fact that the typical order of magnitude of an electrical charge is 10-6 C or also 10-9 C.

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Interested in electricity? inspect out our electricity expense calculator, too!

Bogna Szyk

Charges are...
not equal
Charge 1 (q₁)
Charge 2 (q₂)
Distance (r)
Force (F)
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