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anonymous one year ago If each resistor in the circuit shown is 5.0 Ω and the battery is 12.0 V, what does the first voltmeter (V1) read? A. 0.12 V B. 0.35 V C. 0.96 V D. 2.4 V

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1. anonymous

2. Michele_Laino

at the first step, our equivalent circuit is: |dw:1434308893746:dw|

3. Michele_Laino

so, the total current is: $\large I = \frac{V}{{{R_{TOTAL}}}} = \frac{{12}}{{5 + 5 + 2.5}} = ...Amperes$ since the total resistance is: $\large {R_{TOTAL}} = 5 + 5 + \frac{5}{2} = ...Ohms$

4. anonymous

we get 0.96? choice C is our solution?

5. Michele_Laino

no, since 0.96 is a current, and we want the voltage drop across the parallel of both 5 ohms resistances. So our answer is: $\large {V_1} = I{R_{AB}} = 0.96 \times \frac{5}{2} = ...Volts$ |dw:1434309158256:dw|

6. anonymous

ohh ok! so we get 2.4? meaning choice D should be our solution?

7. Michele_Laino

yes!

8. anonymous

yay! thanks!!:)

9. Michele_Laino

:)

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