In the circuit shown in Figure, the resistances are R1 = 13 Ohms, R2 = 49 Oms, R

Question

In the circuit shown in Figure, the resistances are R1 = 13 Ohms, R2 = 49 Oms, R3 = 92 Ohms. An ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the reading of the ohmmeter (with one decimal place)? please show work thanks in advance.

In the circuit shown in Figure, the resistances are R1 = 13 Ohms, R2 = 49 Ohms, R3 = 92 Ohms. An ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the reading of the ohmmeter (with one decimal place)?

Explanation / Answer

equivalent resistance

1/Req =1/R1 +1/R2 +1/R3 +1/(10+15+20)

1/Req =1/13 +1/49 +1/92 +1/45

Req =7.67 ohms

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