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Chapter 19: Q56P-c (page 799)

In the circuit shown in Figure 19.77 the emf of the battery is 7.4V. Resistor R1has a resistance of 31惟, resistor R2 has a resistance of 47惟, and resistor R3has a resistance of 52惟 . A steady current flows through the circuit.

(a)What is the equivalent resistance of R1and R2 ? (b) What is the equivalent resistance of all three resistors? (c) What is the conventional current throughR3

Short Answer

Expert verified

0.10 A

Step by step solution

01

Given Data

R1=31惟R2=47惟R3=52惟emf=7.4V

02

Concept

The equivalent resistance is the addition of the resistances, when the batteries are connected in series.

03

Step 3(c): Determine the conventional current through  R3

Current in the circuit,

i=emfR=7.470.68=0.10AReferring to subpartbof the SID:875865 - 19 - 56P - b,takeRvalue

Hence, the conventional current through R3 is 0.10 A

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