Search Results

13 results for “resistor”

Formulae (13)

V = IR

Voltage across a resistor equals current times resistance.

P = I^2 R

Power lost as heat in a resistor.

R_{eq} = R_1 + R_2 + \cdots

Series resistances add directly.

\frac{1}{R_{eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \cdots

Reciprocals of parallel resistances add.

\tau = \frac{L}{R}

Time constant of an inductor-resistor circuit.

V_{out} = V_{in}\frac{R_2}{R_1 + R_2}

Output voltage from two series resistors.

I_1 = I\frac{R_2}{R_1 + R_2}

Current split between two parallel resistors.

R = \frac{V_s - V_f}{I}

Resistor to safely drive an LED.

R = \frac{V_s - V_f}{I}

Resistor to safely drive an LED.

V_{out} = V_{in}\frac{R_2}{R_1 + R_2}

Output of a two-resistor divider.

R_{eq} = R_1 + R_2 + \cdots

Total resistance of resistors in series.

\frac{1}{R_{eq}} = \frac{1}{R_1} + \frac{1}{R_2} + \cdots

Total resistance of resistors in parallel.

\tau = RC

Charging time constant of a resistor-capacitor circuit.