1st year of post-compulsory secondary education
Electric current
J.L. San Emeterio
EC Unit
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THE ASSOCIATION OF GENERATORS
Nearly all of us have devices which work with several batteries connected at the same time.
                                            

When they are connected with the opposite poles together we say that they are in series. You will soon see that this type of connection permits us above all to increase the electromotive force. 

When they are connected with the poles of the same sign together we say that they are connected in parallel. You will see that batteries connected in parallel permit us to increase the current.
  
Click on to see the characteristics of these connections.
The concept of a circuit
The hydraulic simile
Elements in the circuit
Characteristic magnitudes
Conclusions
Laws and basic magnitudes
Ohm's law
Power and energy in the circuit
The generalization of the laws
Conclusions
More complex circuits
The arrangement of resistances
The arrangement of generators
A combined circuit
Conclusions
Evaluation