A charge of #4 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #27 J# to #15 J#, what is the voltage between points A and B?

1 Answer
Jul 5, 2018

Answer:

#3# volts

Explanation:

Using the definition, voltage is the difference of electric potential between two points per unit charge passing through it. We can express it as an equation in the form of:

#V=(B-A)/C#

where:

  • #B# is the electric potential of the second point

  • #A# is the electric potential of the first point

  • #C# is the charge passing through in coulombs

So, we get:

#V=(27 \ "J"-15 \ "J")/(4 \ "C")#

#=(12 \ "J")/(4 \ "C")#

#=3 \ "V"#