Magnetic Force

Source of Magnetic Field

Review

Multiple Choice

The formula $B=\mu_0\ \frac{I}{2\pi d}$  is the magnetic field made by:

Multiple Choice

The formula $B=\mu_0\ \frac{NI}{2R}$  is the magnetic field made by:

Multiple Choice

The formula $B=\mu_0\ \frac{NI}{l}$  is the magnetic field made by:

Multiple Choice

From the formula $B=\mu_0\ \frac{I}{2\pi d}$  , the incorrect rearrangement is:

•  $I=\frac{2\pi dB}{\mu_0}$  
  

•  $d=\frac{2\pi IB}{\mu_0}$  
  

•  $d=\frac{I\mu_0}{2\pi B}$  
  

•  $I=\frac{1}{\mu_0}\ 2\pi dB$  
  

Multiple Choice

From the formula $B=\mu_0\ \frac{NI}{2R}$  , the incorrect rearrangement is:

•  $I=\frac{2R\mu_0B}{N}$  
  

•  $N=\frac{2RB}{\mu_0I}$  
  

•  $R=\frac{\mu_0NI}{2B}$  
  

•  $I=\frac{2RB}{\mu_0N}$  
  

Multiple Choice

From the formula $B=\mu_0\ \frac{NI}{l}$  , the incorrect rearrangement is:

•  $I=\frac{\mu_0N}{Bl}$  
  

•  $N=\frac{Bl}{\mu_0N}$  
  

•  $l=\frac{\mu_0NI}{B}$  
  

•  $I=\frac{Bl}{\mu_0N}$  
  

Force in Magnetic Fields

• Electromagnetic Forces

• Magnetic Forces of Moving Charges