2.4 - Electric fields
● ***Electric field: a region where a charged particle experiences a force
● ***Electric field strength: magnitude of force (per charge) a charged particle
experiences in an electric field
Electric forces
−1 F (electric/electrostatic force )
● *** E( electric field strength[N C ])=
q( charge)
○ Direction of E (a vector) = direction of F (defined as the force on a +ve
charge)
Uniform electric fields (parallel plates)
−1 V (electric potential difference )
● *** E( electric field strength[V m ])=
d (distance ¿ plates)
+
(el
ect
ric -
fiel
d
lin
es)
● (red: equipotential lines)
○ Theoretically, the 6V equipotential line should be in the middle of both plates
● Electric field strength is constant at all points between the plates
● Distance between field lines is constant, field lines ⟂ equipotential lines
● The closer the field lines are together, the stronger the field (E ↑)
1
● ***Electric field: a region where a charged particle experiences a force
● ***Electric field strength: magnitude of force (per charge) a charged particle
experiences in an electric field
Electric forces
−1 F (electric/electrostatic force )
● *** E( electric field strength[N C ])=
q( charge)
○ Direction of E (a vector) = direction of F (defined as the force on a +ve
charge)
Uniform electric fields (parallel plates)
−1 V (electric potential difference )
● *** E( electric field strength[V m ])=
d (distance ¿ plates)
+
(el
ect
ric -
fiel
d
lin
es)
● (red: equipotential lines)
○ Theoretically, the 6V equipotential line should be in the middle of both plates
● Electric field strength is constant at all points between the plates
● Distance between field lines is constant, field lines ⟂ equipotential lines
● The closer the field lines are together, the stronger the field (E ↑)
1
