Jinsi ya kukokotoa Ohm's Law

Ohm's Law ni nini?

Ohm's Law relates voltage, current, and resistance in electrical circuits. This calculator solves for any one of the four quantities — voltage (V), current (I), resistance (R), or power (P) — given any two known values.

Fomula

V = IR · P = IV = I²R = V²/R

Mwongozo wa Hatua kwa Hatua

1Enter any two known values (V, I, R, or P)
2The calculator solves the remaining two using Ohm's Law and the power formula
3Results apply to DC circuits and to AC circuits at unity power factor

Mifano Iliyotatuliwa

Ingizo

V = 12V · R = 47Ω

Matokeo

I = 12/47 ≈ 0.255 A · P = 12 × 0.255 ≈ 3.06 W

A 1/4W resistor would overheat here — use at least a 1/2W rated part

Makosa ya Kawaida ya Kuepuka

✕Applying Ohm's Law to non-linear components (diodes, transistors)
✕Forgetting unit prefixes: mA, kΩ, mW

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