Ten cells each of EMF 2V & internal resistance 0.01 ohm are joined in series to produce a supply of 10 ohm.What are the current and voltage across the external resistance ?

Asked by  | 3rd Jun, 2012, 12:35: PM

Expert Answer:

 In series, the emfs add together, so combined emf = 20 volts 
 Total resistance in the circuit = 0.01 * 10 + 10 = 10.1 ohms
 
Current across external resistance = 20/10.1 ampere
 
voltage across external resistance = 20/10.1 * 10 volt
 

Answered by  | 4th Jun, 2012, 09:20: AM

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