* 2-1 For assembling the voltage divider shown next, two of each of the followin

Question

* 2-1 For assembling the voltage divider shown next, two of each of the following resistors are available 250 , 500 , and 1.00 kf2. 10.0 V R2 (a) Describe a suitable combination of the resistors that would give the indicated voltages. (b) What would be the IR drop across R,2 Note: R, could be more than one resistor. What current would be drawn from the source? (d) What power is dissipated by the circuit? Assume that for a circuit similar to that shown in Problem 2-1, R * 2-2 200 , Ra 400 , R, 2.00 kn, and V,=15.0 V (a) What is the voltage V? (b) What would be the power loss in resistor R? (c) What fraction of the total power lost by the circuit would be dissipated in resistor R?

Explanation / Answer

2-1)a] here V1= 1V, V2=4V,

for series (same current) , resistance is proportional to voltage across,

so R2 = 4R1,

250 ohm and 1 k ohm will be used

b] V3= V-V1-V2 = 5 V answer

c] current = 1/250 ohm = 0.004 A = 4 mA answer

d] power dissipated = iV = 0.004*10 = 0.04 W answer

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