Ohm's Law

Ohm's Law

The most fundamental relationship in circuit analysis: voltage, current, and resistance are proportional.

V = IR qquad I = rac{V}{R} qquad R = rac{V}{I}

• V — voltage (volts, V)
• I — current (amperes, A)
• R — resistance (ohms, Ω)

Intuition

Think of current as water flow, voltage as pressure, and resistance as pipe narrowness. Doubling the pressure doubles the flow; doubling the pipe narrowness halves it.

Ohm's Law Triangle

$V = IR$

Cover the quantity you want to find; the remaining two show how to compute it.

Examples

Your Task

Implement ohms_current(V, R) returning current in amperes.