Question

In the pictured circuit, If the reading of voltmeter 1 is $3.0V$ the reading of ammeter 2 is $20A$ and the reading of voltmeter 3 is $5.0V$, what is the terminal voltage of the battery?

• A. $8.0V$
• B. $3.0V$
• C. $5.0V$
• D. $10.0V$
• E. Not enough information is given to answer this question

Answer 1

The correct option is A $8.0V$

Given : $V_1=3.0V$ $V_2=5.0V$

Potential drop across $R_3$ and $R_2$ is same and equal to $5.0V$

Thus terminal voltage of the battery $V_b=V_1+V_2=3.0+5.0=8.0V$