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Chapter 27: Q5Q (page 794)

For each circuit in Fig. 27-20, are the resistors connected in series, in parallel, or neither?

Short Answer

Expert verified

Fig 27.20aseries

Fig27.20bparallel

Fig27.20cparallel

Step by step solution

01

Given

02

Determining the concept

Observe the fig. carefully. If the resistances are one below the other, they are connected in parallel and if connected one after the other, they are in series.

03

Determining whether resistances are in series, parallel, or neither

Here, in fig 27.20a,resistances are connected in series because they are wired one after another in a chain.

Hence, Series arrangement is shown below.

Here, in fig27.20b,resistances are connected in parallel because they are not wired one after another in a chain.

Hence, parallel arrangement is shown below.

Here, in fig27.20c,resistances are connected in parallel because they are not wired one after another in a chain.

Hence, parallel arrangement is shown below.

Therefore, if resistances are connected in a chain, they are in series, and the ones, which are not, are in parallel.

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Most popular questions from this chapter

In Fig. 27-70, the ideal battery has emf 蔚=30.0V, and the resistances areR1=R2=14惟, R3=R4=R5=6.0惟, R6=2.0惟, and R7=1.5惟. What are currents (a)i2, (b) i4, (c) i1, (d) i3, and (e)i5 ?

Fig. 27-70

The current in a single-loop circuit with one resistance Ris 5.0 A. When an additional resistance of 2.0惟is inserted in series with R, the current drops to 4.0 A. What is R?

Question: Figure shows a battery connected across a uniform resistor R-0. A sliding contact can move across the resistor from x = 0 at the left to x = 10 at the right. Moving the contact changes how much resistance is to the left of the contact and how much is to the right. Find the rate at which energy is dissipated in resistor as a function of x. Plot the function for 蔚=50V,R=2000惟,andR0=100惟, .

(a) In Fig. 27-18a, are resistorsR1and R3in series?

(b) Are resistors R1&R3in parallel?

(c) Rank the equivalent resistances of the four circuits shown in Fig. 27-18, greatest first.

Figure 27-78 shows a portion of a circuit through which there is a current I=6.00A. The resistances are R1.=R2=2.00R3=2.OOR4=4.00惟What is the currenti1through resistor 1?
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