NCUK IFY Physics - W) Electric Fields

Electric fields are found around...

• masses

• electric charges

• magnets

• everything

Symbol for electric field strength

• E

• T

• g

• Q

Electric field strength

• force per unit mass

• charge per unit mass

• force per unit charge

• charge per unit force

Unit for electric field strength

• $T$

• $N$

• $Nm^{-2}$

• $NC^{-1}$

• $Nm$

The electric potential of a location is the...

• energy needed to move a charge from infinity

• power needed to move a charge from infinity

• force needed to move a charge from infinity

• distance needed to move a charge from infinity

• Radial electric field

• Uniform electric field

• Radial magnetic field

• Uniform magnetic field

• $E=Vd$

• $E=\frac{d}{V}$

• $E=\frac{V}{d}$

• $E=V+d$

• $V=Ed$

• $V=\frac{E}{d}$

• $V=\frac{d}{E}$

• $V=E+d$

• Radial electric field

• Uniform electric field

• Radial magnetic field

• Uniform magnetic field

• $E=\frac{Qq}{4\pi\epsilon_0r^2}$

• $E=\frac{V}{d}$

• $E=\frac{V}{4\pi\epsilon_0r^2}$

• $E=\frac{Q}{4\pi\epsilon_0r^2}$