Question

Can someone explain the equations I put in the box in detail?

12 dB dt 4π r. 4T r 2π r

Answer 1

$\underset{F}{\rightarrow}$ = q ($\underset{v}{\rightarrow}$x $\underset{B}{\rightarrow}$ )

The above equation is used to determine the magnetic force experienced by a charge particle having charge "q" on it and moving with velocity "v" in a region having magnetic field "B"

$\underset{F}{\rightarrow}$ = i $\underset{l}{\rightarrow}$ x $\underset{B}{\rightarrow}$

The above equation is used to determine the magnetic force experienced by a current carrying wire of length "l" and carrying current "i" in a region having magnetic field "B".

$\underset{B}{\rightarrow}$= ($\mu _{o}$/4$\pi$) (q $\underset{v}{\rightarrow}$ x $\hat{r}$)/r²

The above equation gives the magnetic field produced by a moving charge having charge "q" and velocity "v" , at a distance "r" from the location where the magnetic field is to be determined.

$\underset{B}{\rightarrow}$= ($\mu _{o}$/2$\pi$) (I/r)

The above equation gives the magnetic field produced by a long wire carrying current "I" at a distance "r" from the wire.

$\phi _{m}$ = $\int \underset{B}{\rightarrow}.\underset{dA}{\rightarrow}$

The above equation gives the magnetic flux produced by magnetic field through a surface area.

E = - d$\phi$/dt

This equation gives the induced emf