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Chapter 28: Q. 45 (page 792)

What is the equivalent resistance between points a and b in FIGURE P28.45?

Short Answer

Expert verified

The equivalent resistance will be5.5Ω.

Step by step solution

01

Given information

We have given,

The complex linear circuit.

We have to find the equivalent resistance between points a and b.

02

Simplify

We have to use the rule to calculate the resistance in parallel and series combinations.

By given diagram we can see that some of the resistances are in parallel. then

1Req1=14Ω+16Ω112ΩReq1=0.5Ω

Now left are in series. then,

localid="1651058783263" Req=(0.2+2+3)ΩReq=5.5Ω

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Most popular questions from this chapter

For the circuit shown in FIGURE P28.60, find the current through and the potential difference across each resistor. Place your results in a table for ease of reading.

What are the emf and internal resistance of the battery in FIGURE P28.46?

The capacitor in FIGURE P28.73begins to charge after the switch closes atτ=0s..

a. What is ∆Vc a very long time after the switch has closed?

b. What isQmaxin terms of E,R, and C?

c. In this circuit, does localid="1649091794998" I=+dQ/dtor-dQ/dt? Explain.

d. Find an expression for the current I at time t. Graph I from τ=0to localid="1649091939933" t=5r.

What is the equivalent resistance between points a and b in FIGURE EX28.28?

The flash on a compact camera stores energy in a 120μFcapacitor that is charged to 220V. When the flash is fired, the capacitor is quickly discharged through a lightbulb with5.0Ωof resistance.

a. Light from the flash is essentially finished after two time constants have elapsed. For how long does this flash illuminate the scene?

b. At what rate is the lightbulb dissipating energy 250μsafter the flash is fired?

c. What total energy is dissipated by the lightbulb?
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