Chapter 28: Q. 1 (page 790)
Draw a circuit diagram for the circuit of FIGURE EX28.1.
Short Answer
Connect the battery in series with the two resistorsin parallel with the combination of these resistors.
Chapter 28: Q. 1 (page 790)
Draw a circuit diagram for the circuit of FIGURE EX28.1.
Connect the battery in series with the two resistorsin parallel with the combination of these resistors.
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Get started for freeA long, diameter wire has a variable resistivity given by
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where x is measured from one end of the wire. What is the current if this wire is connected to the terminals of a battery?
A string of holiday lights can be wired in series, but all the bulbs go out if one burns out because that breaks the circuit. Most lights today are wired in series, but each bulb has a special fuse that short-circuits the bulb—making a connection around it—if it burns out, thus keeping the other lights on. Suppose a string of lights is connected in this way and plugged into a outlet. By what factor does the power dissipated by each remaining bulb increase when the first bulb burns out?
In FIGURE , what is the magnitude of the current in the wire to the right of the junction? Does the charge in this wire flow to the right or to the left?
What power is dissipated by the resistor in ?
Two of the three resistors in FIGURE EX28.22 are unknown but equal. The total resistance between pointsisis . What is the value of ?
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