FCC Technician Exam Question Of The Day (T5D02)

Q) What formula is used to calculate voltage in a circuit?

A) Voltage (E) equals current (I) multiplied by resistance (R)

NJ2X Notes:
Ohm's Law was discovered by Georg Simon Ohm and is worth committing to memory:

E = I * R

or by manipulating the terms algebraically:

I = E / R

or

R = E / I