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10 results for “electrical”

Formulae (10)

P = VI = I^2R

Power dissipated in an electrical component.

P = VI

Power dissipated by a component.

P = \frac{V^2}{R}

Power from voltage and resistance.

P = VI

Power in an electrical circuit.

P = \sqrt{3}\,V I \cos\phi

Real power in a balanced three-phase system.

PF = \frac{P}{S}

Ratio of real power to apparent power.

\frac{V_p}{V_s} = \frac{N_p}{N_s}

Voltage ratio equals the turns ratio.

\tau = RC

Charging time constant of a resistor-capacitor circuit.

n_s = \frac{120 f}{P}

Rotational speed of an AC motor field.

E = P \times t

Electrical energy used over time.