### FCC Technician Exam Question Of The Day (T5C09)

Q) How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?

A) 138 watts

It is useful to memorize the PIE triangle. By covering up one variable you get the equation. So in this example:

P = I * E

P = 10 Amps * 13.8 volts = 138 Watts

Easy as PIE!

A) 138 watts

**NJ2X Notes**:NJ2X PIE Triangle |

It is useful to memorize the PIE triangle. By covering up one variable you get the equation. So in this example:

P = I * E

P = 10 Amps * 13.8 volts = 138 Watts

Easy as PIE!