Ohm's Law Simulation

Grades 10th - 12th by Ankush Naskar
1 Ω
2 Ω
3 Ω
∼ 0 Ω
12 V
0 A
0 A
0 A
0 A
Don't forget to turn on the switch!   Current flows at speed of light. It's slowed down here.
Instructions : Drag and drop the resistors into the drop areas (dashed grey boxes) and find out the relation between voltage (V), current (I) and resistance (R) of circuit.

What is Resistance?

Resistance is the measure of obstruction offered to the flow of electric current through a material. The SI unit of electrical resistance is ohm (Ω). It depends upon the nature of material, length of the conductor and cross-section area of the wire.

What is Ohms Law?

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
So, I = V/R where V is voltage, I is current and R is resistance of circuit. Or, rearranging, V = I × R.

What is a Series Circuit?

When the components are connected end to end in a sequence, we call it a series circuit. The current flows along a single path so the current through each component remains the same. There is a different voltage drop across each component depending upon its resistance (as per Ohm's law, Vn = Icircuit × Rn). The sum of voltages across each component is equal to the total voltage provided by the power source (Vcircuit = V1+V2+...+Vn).

What is a Parallel Circuit?

When each component is individually connected to the power source such that the current can take multiple paths, we call it a parallel circuit. Each component gets the same voltage and draws a different current depending upon its resistance (as per Ohm's law, In = Vcircuit/Rn). The sum of currents through each component is equal to the total current flowing through the circuit (Icircuit = I1+I2+...+In).

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Grades: 8 - 12
Animan Naskar