SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-power-12v-2-5a

How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

30 watts.

Start playing free

  1. 4.8 watts
  2. 30 watts ✔
  3. 14.5 watts

Why: Multiply voltage by current: 12 volts times 2.5 amperes equals 30 watts. That is the delivered electrical power.

Huh, didn't know that: Doubling the current at the same voltage would double the power.

The dad joke
Why did 12 volts bring 2.5 amps to the party? It wanted 30 watts of fun.
Like this card?
Play the game

References

Answer: 30 watts. Multiply voltage by current: 12 volts times 2.5 amperes equals 30 watts. That is the delivered electrical power.

  1. NCVEC 2026-2030 Technician Question Pool, T5C10 ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    B. 30 watts
    Checked 2026-10-09.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Ham RadioWhat is the maximum PEP output for a Technician in their HF band segments?Ham RadioExcept for special cases, what is the max PEP output for Technicians above 30 MHz?Ham RadioHow much power is delivered by 13.8 volts DC at 10 amperes?

That's stuff everyone should know.