Q) What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?
A) 20 volts
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
In this example:
E = I * R
E = 2 amperes * 10 ohms = 20 volts
