Chapter 23, Problem 52A

To determine

Supply voltage.

Answer to Problem 52A

Supply voltage is, $V=8.40\text{ V}$ .

Explanation of Solution

Given:

Branch voltages are;

  $V_1=3.50\text{ V, }{V}_2=4.90\text{ V}$

Formula used:

For series circuit supply voltage is equal to sum of all branch voltage.

  $V=V_1+V_2+V_3+\mathrm{..........}{V}_n$

Where, $V$ is supply voltage and $V_1,V_2,V_3\mathrm{..........}{V}_n$ are branch voltage.

Calculation:

Now, substituting the value of $V_1,V_2,$ and solve.

  $\begin{array}{c}V=3.50+4.90\\ =8.40\text{ V}\end{array}$

Conclusion:

Therefore, supply voltage is 8.40 V.