22 Electric Fields ( missing capacitor bits)

Question 1

What are fields

Answer 1

regions in which a charged object will experience a force at a distance

Question 2

Electric field strength

Answer 2

force experienced per unit positive charge at that point

E = F/Q

Question 3

coulomb’s law

Answer 3

F = Qq/(4𝝿r^2 ε0)

Question 4

equation linking Force(F) ,Field Strength(E), charge(Q)

Answer 4

E = FQ

F = E/Q

Question 5

equation involving, Field strength, Voltage, and distance

Derivation and state the case it works for

Answer 5

only works for parallel plates

F = Wd
W= VQ

E = F/Q

EQ = VQd
E = Vd

Question 6

Unit for electric field strength

Answer 6

NC^-1 or Vm^-1

Question 7

parallel plate capacitor

Answer 7

come back to

Question 8

permittivity of free space experiment

Question 9

what is electric potential energy

Answer 9

When two positive charge are brought close they repel each other. The energy takes to bring a charge from infinity away to a distance of r away from the source.

E = Qq/(4𝝿ε0r)

from integrating force with respect to dr from r to infinity

opposite if two charge have different sign

Question 10

equipotential