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Equation
         
    Name Transformer  
 
    Equation V 2 V 1 = - N 2 N 1  
 
    Definition of terms V1 = voltage of first coil, V2 = voltage of second coil, N1 = turns on first coil, N2 = turns on second coil  
 
    Comments

A transformer consists of a coil of N1 turns attached to a voltage source, and a coil of N2 turns nearby with a resistance across it. The voltage induced in the second coil will be given by the equation above.

Transformers are widely used in circuits for changing the voltage at which parts of the circuit run.		  
 
    References Electricity and Magnetism , W J Duffin, McGraw-Hill, 4th edition, 1990  
         


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