Ohm's law, circuits, capacitance, resistance, and electrical circuit calculators.
Most used tools
Apply Ohm's law V = IR to find voltage, current, or resistance.
Compute electrical power P = VI = I^2R = V^2/R for DC circuits.
Find total resistance R_total = R1 + R2 + ... + Rn for series-connected resistors.
Compute equivalent resistance for parallel resistors using 1/R_total = 1/R1 + 1/R2 + ...
Compute stored energy E = 0.5 * C * V^2 in a capacitor.
Apply Coulomb's law F = k*q1*q2/r^2 to find electrostatic force between charges.
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Apply Ohm's law V = IR to find voltage, current, or resistance.
Compute electrical power P = VI = I^2R = V^2/R for DC circuits.
Find total resistance R_total = R1 + R2 + ... + Rn for series-connected resistors.
Compute equivalent resistance for parallel resistors using 1/R_total = 1/R1 + 1/R2 + ...
Compute the RC time constant tau = RC to find charging/discharging rate.
Compute the RL time constant tau = L/R to find current rise/decay rate.
Compute capacitor charge Q = CV from capacitance and voltage.
Compute stored energy E = 0.5 * C * V^2 in a capacitor.
Apply Coulomb's law F = k*q1*q2/r^2 to find electrostatic force between charges.
Compute electric field E = F/q or E = kQ/r^2 for point charges.
Compute electric potential V = kQ/r for a point charge at distance r.
Compute capacitance C = epsilon_0 * epsilon_r * A / d for parallel plate geometry.
Compute current density J = I/A in amperes per square meter.
Compute resistivity rho = R * A / L to characterize a material's electrical resistance.
Apply KVL (sum of voltages = 0) and KCL (sum of currents = 0) to solve circuit problems.
Our electricity calculators provide accurate, instant results for physics calculations. Whether you need to compute forces, velocities, energies, or other physical quantities, these tools have you covered.
