Electric Charge (Q = It)
Also known as Q = It · coulombs from amps
Enter your known values, leave one input blank, and solves for the missing one. Try different units for next level excitement!
Learning zone
One ampere means one coulomb of charge streaming past every second, so for a steady current the total charge is just flow rate times duration — a 2 A charger running for 60 s moves 120 C. Battery capacity ratings in amp-hours are this same relation: 1 Ah is 3600 C of deliverable charge.
Electric Charge (Q = It)
Where
- = Charge
- = Current
- = Time
Missing one of these? Work it out first, then come back
- Charge — Coulomb's Law, Capacitance (C = Q/V)
- Current — Ohm's Law, Electrical Power (P = VI)
- Time — Speed, Distance & Time, Electrical Energy (E = Pt)