Physics-
General
Easy

Question

In the figure shown below, the terminal voltage across E subscript 2 end subscript is

  1. 12 V    
  2. 12.66 V    
  3. 11.34 V    
  4. 11.66 V    

The correct answer is: 11.34 V


    Net voltage =12-8=4V
    Net resistance =9+2+1=12capital omega
    Current through the circuit
    equals fraction numerator 4 over denominator 12 end fraction equals fraction numerator 1 over denominator 3 end fraction A
    Terminal voltage across E subscript 2 end subscript is
    equals E subscript 2 end subscript minus I r subscript 2 end subscript equals 12 minus fraction numerator 1 over denominator 3 end fraction cross times 2
    equals 12 minus fraction numerator 2 over denominator 3 end fraction equals fraction numerator 34 over denominator 3 end fraction equals 11.34 blank V

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