All tools
TOOL IDB-ELE-006
Ohm's law

Desktop only

Engineering tools are available only on desktop screens.

Please open this page on a laptop or desktop browser.

Ohm's law

Fill any two of V, I, R, P. The other two are computed live using V=IR and P=VI.

V · I · R · P wheel + circuit Enter any two
OHM LAW V I R P V R I = — heat P = — V ↔ I (at R fixed) — A — V
Engineering notes

Identities

  • V = I · R
  • P = V · I = I² · R = V² / R

Result

Live