1. Electric Field > is a vector quantity ( vector addition can be done) > expressed as E = force/ charge = F / q > SI unit is N/C

2. Electric Potential, V electric potential energy of a test charge expressed as V = EPE/ q SI unit is volt (V) 1 J/C = 1 V

3. Electric Potential Difference, V ba difference in potential at two different points, Vb – Va (Unit is volts, V) V ba = work done/ q V ba = Electric field X separation distance = E d

4. Problem Twelve joules of work are needed to transfer 2.0 C of charge from one terminal of a storage battery to another. What is the potential difference between the terminals?

5. An electric field stronger than 3.0 X 10 6 V/m will cause sparks to occur in air. What is the maximum potential difference that can be applied across two metal plates 1.0 mm apart before sparking begins?

6. Electric Current, I amount of charge flowing in a certain conductor per unit time expressed as I = Q /t where Q is the amount of charge, in C t is the time, in s I is the electric current, in A The SI unit for electric current is ampere, with a symbol A.