question_answer

Consider the diagram shown below. A voltmeter of resistance \[150\Omega \]. is connected across A and 5. The potential drop across and C measured by voltmeter is 

A) 29V                       

B) 27V         

C) 31 V                      

D) 30V

Correct Answer: C

Solution :

                When voltmeter is connected across A and B, the equivalent resistance of the circuit is \[benzyl>allyl>{{3}^{\circ }}>{{2}^{\circ }}>{{1}^{\circ }}>Me>\] \[\text{I}\] \[\text{II}\] Current, \[\text{III}\]. Therefore, potential drop across B and C is \[\text{IIIIII}\] \[\text{IIIIII}\] \[\text{IIIIII}\]