The current formula is obtained from the Ohms law. Present is characterized as the circulation of electrons in an electrical circuit. The circulation of electrons occurs as result of potential differences. The present is additionally known as the rate of change of charge v time. Existing is stood for by I and also SI unit of existing is Ampere. Allow us discover the application of the existing formula in the section below.

You are watching: The opposition to the flow of electricity is called

What Is the existing Formula?

According come Ohm's law, the present is theratioof the potential difference and the resistance. Thus, the present formulais provided by: i = V/R



I representcurrent in Ampere,V is the potential difference in VoltR is the resistance in Ohm(Ω).

Let us see the applications the the current formula in the complying with solved instances section.

Want to find facility math solutions within seconds?
Use our free online calculator come solve complicated questions. Through, find solutions in an easy and easy steps.

Book a cost-free Trial Class

Examples Using existing Formula

Example 1: In an electric circuit, the potential difference and also the resistance are given as 20V and also 4Ω respectively. Making use of the present formula, uncover the existing flowing in the circuit.


To find: Current(I) flow in the circuit.Given:V = 20V, R = 4ΩUsing current formulaI = V/RI = 20/4I = 5

Answer: existing flowing in the circuit is 5 Ampere.

Example 2: The full current flowing in an electrical circuit is 50Amp vice versa, the resistance the the wires is 14Ohm. Making use of the existing formula uncover the potential difference.


To uncover the potential difference:Given:I = 50 A, R = 14ΩUsing existing formulaI = V/R50 = V/14V = 50 × 14V = 700

Answer: Potential distinction is 700 V.

Example 3: In an electric circuit, the potential distinction is 20 V and also the worth of present is 5 Amp respectively. Making use of the current formula, discover the resistance that the circuit.


To find the resistance(R) that the circuit:Given:V = 20V, ns = 5 AmpUsing current formulaR = V/IR = 20/5R = 4Ω

Answer:The resistance the the circuit4Ω.

FAQs on present Formula

How do You calculation CurrentUsing present Formula?

If the voltage (V) and resistance (R)of any kind of circuit is offered we have the right to use the existing formula to calculation the current, i.e.,I = V/R (amps).

How perform You calculation VoltageUsing present Formula?

If the existing (I)and resistance (R) of any circuit is provided we deserve to moldthe present formula to calculation the voltage, i.e.,V = IR (Volts).

How perform You calculate ResistanceUsing existing Formula?

If the present (I)and potential difference(V) of any type of circuit are provided we have the right to mold the existing formula to calculate the resistance, i.e., R= V/I(Ohms Ω).

What Is the an interpretation of current Formula? create Its SI Unit.

See more: Parents Are A Large Factor In How Their Children Perceive Their Bodies.

The present is theratioof the potential difference and also the resistance. The is represented as (I). The present formula is offered as ns = V/R. The SI unit of present is Ampere (Amp).