Electric Current

Coulomb's Law

•  $$f=K\frac{qAqB}{r^2}$$ 

•  $f=K\ \frac{qAqB​}{r}$ 
  

•  $f=\frac{qAqB}{r^2}​$ 

•  $f=\frac{qAqB​}{r}$  

Formula for Electric Field Strength

• $E=\frac{F\ \ on\ \ q'}{q'}$

• $E=\frac{F\ \ on\ \ q'}{q^2}$

• $E=K\frac{F\ \ on\ \ q'}{q'}$

• $E=K\frac{F\ \ on\ \ q'}{q^2}$

Coulomb's Constant

• $9\ x\ 10^9\ \frac{N\circ m^2}{C^2}$

• $9\ x\ 10^9\ \frac{N\circ C^2}{m^2}$

• $9\ x\ 10^9\ \frac{C\circ m^2}{N^2}$

• $9\ x\ 10^{8\ }\ \frac{N\circ m^2}{C^2}$

Formula for Capacitance

• $C=\frac{q}{\Delta V}$

• $C=\frac{\Delta V}{q}$

• $C=\Delta Vq$

• $\Delta V=\left(qA+qB\right)C$

Formula 1 for Power

• P = IV

• P = WK

• V = WK

• V = IV

How is resistance found?

• $R\ =\frac{V}{I}$

• $R\ =\frac{V}{A}$

• $R\ =\frac{I}{A}$

• $R\ =\frac{I}{V}$

Formula 2 for Power

• $P=I^2R$

• $P=I^2V$

• $P=R^2V$

• $P=RV$

Formula 3 for Power

• $P=\frac{V^2}{R}$

• $P=\frac{I^2}{R}V$

• $P=R^2V$

• $P=RV$

Formula For Electric Potential Difference

• $\Delta V=\frac{F}{q'}$

• $\Delta V=\frac{F}{c'}$

• $\Delta C=\frac{F}{q'}$

• $\Delta V=\frac{C}{q'}$

How is electric field strength related to potential difference?

• $\Delta V=Ed$

• $\Delta V=Ev$

• $\Delta J=Ed$

• $\Delta J=Ev$