Q) What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

A) 10 volts

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 = 1 ampere * 10 ohm = 10 volts

A) 10 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 = 1 ampere * 10 ohm = 10 volts