The power in a circuit is 2 W and the voltage is 20 VDC. What is the circuit current?

5 Answers

• Power in watts = voltage , V X Current C in Amperes ,

  so 2 watts power = 20 volts x current C in Amperes ,

  therfore , Current drawn in the circuit , in Amperes = 2 watts / 20 volts = 1/ 10 or = 0.10 Amperes.

• CURRENT = 2 / 20

• Ohm’s law: P = V * I

  so I = P/V = 2/20 = 0.1 A

• I = W / V, where I=current, W=wattage, and V=voltage

• Watts = volts*amps

  You’ve got two of those quantities, so you can derive the third.