G1470JPG-Photo .ee sil photos Add to a oestion ADVANCED PROBLEMS 31. In the circ

Question

G1470JPG-Photo .ee sil photos Add to a oestion ADVANCED PROBLEMS 31. In the circuit o 2. The total resistance of a parallel circuit is 25 . If the total c nces R2, R3, and R4 f Figure 5-71, determine resista urrent is 100 mA, how much o resistor that makes up part of the parallel circuit? -72? R is the lowest-value resistor, an rent is through a 220 t through each resistor in Figure 5 33. What is the curren others are multiples of that value as indicated. + o 10 mA 7.5 mA 2 mA 0.5 mA 2R 3R 4R R2 R, smAR SIGURE 5-71 FIGURE 5-72 Type here to search

Explanation / Answer

Solving 1st question

Since all resistance are connected in parallel

So voltage across them will be same

Voltage across R1=50*1*10^(-3)=0.05 V

Voltage across R2=2*10^(-3)*R2=0.05

R2=25 ohm

Voltage across R3=0.0005*R3=0.05

R3=100 ohm

Current across R4=7.5-3.5=4 mA

Voltage across R4=0.004*R4=0.05

R4=12.5ohm

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