1 answer

A four-resistor circuit is shown in the figure. The values of the resistors are as follows:...

Question:

A four-resistor circuit is shown in the figure. The values of the resistors are as follows: R2=4 Ohms, R2=R3=R4-3 Ohms. What
A four-resistor circuit is shown in the figure. The values of the resistors are as follows: R2=4 Ohms, R2=R3=R4-3 Ohms. What is the equivalent resistance Req for this circuit? RA my Ris R2 R3 ş O 0.8 ohms 1.33 ohms O 3.5 ohms O 2.5 ohms O 0.67 ohms

Answers

In the given circuit, R4 and R3 are in series and the series combination of R4 and R3 , resistor R1 , and   resistor R2 are in parallel. Thus, the equivalent resistance Req of the circuit is given by :

\frac{1}{R_{eq}} = \frac{1}{R_1} +\frac{1}{R_2} +\frac{1}{(R_3 + R_4)} =[\frac{1}{4} +\frac{1}{3} +\frac{1}{(3 + 3)}] =\frac {3} {4 } \mho \newline \Rightarrow R_{eq} = \frac{4}{3} \ \Omega = 1.333 \ \Omega

Correct choice: Option (ii)

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