For the circuit drawn inside, what will be the voltage drop across R_2?

A. 9.47 V
B. 14.2 V
C. 21.3 V
D. 45.0 V

Question

For the circuit drawn inside, what will be the voltage drop across R_2?

A. 9.47 V
B. 14.2 V
C. 21.3 V
D. 45.0 V

anonymous · Answer

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johnweldon1993 · Answer

When you combine all of the resistors...what do you get for the equivalent resistance?

anonymous · Answer

95?

johnweldon1993 · Answer

Correct...

so if we were to redraw our circuit now...

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What would be the total current going through the resistor?

anonymous · Answer

45?

johnweldon1993 · Answer

Current, not Voltage  :)

$$\large I = \frac{V}{R}$$

anonymous · Answer

oh oops! so 45/95? = 0.47? :/

johnweldon1993 · Answer

Right...that is our current that goes through our entire circuit here

Now that we know that, we break apart our circuit again to the original with the current drawn in

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