Chapter 4: Q62P (page 877)
(a) Find the current through the battery and each resistor in the circuit shown in Fig. P26.62. (b) What is the equivalent resistance of the resistor network?
Short Answer
(a)
(b) The equivalent resistance is .
Chapter 4: Q62P (page 877)
(a) Find the current through the battery and each resistor in the circuit shown in Fig. P26.62. (b) What is the equivalent resistance of the resistor network?
(a)
(b) The equivalent resistance is .
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Get started for freeThe circuit shown in Fig. E25.33 contains two batteries, each with an emf and an internal resistance, and two resistors. Find (a) the current in the circuit (magnitude and direction) and (b) the terminal voltage Vabof the 16.0-V battery.
Fig. E25.33
In the circuit shown in Fig. E26.18,(a) What is the potential difference Vab between points a and b when the switch S is open and when S is closed? (b) For each resistor, calculate the current through the resistor with S open and with S closed. For each resistor, does the current increase or decrease when S is closed?
A cylindrical rod of diameter is connected to
a power supply that maintains a constant potential difference of across
its ends, while an ammeter measures the current through it. You observe that
at room temperature the ammeter reads while at it
reads . You can ignore any thermal expansion of the rod. Find (a) the
resistivity at and (b) the temperature coefficient of resistivity at for the material of the rod.
When is a 1.5 - VAAA battery not actually a 1.5 - V battery? That is, when do this its terminals provide a potential difference of less than 1.5 V ?
Small aircraft often have 24 V electrical systems rather than the 12 V systems in automobiles, even though the electrical power requirements are roughly the same in both applications. The explanation given by aircraft designers is that a 24 V system weighs less than a 12 V system because thinner wires can be used. Explain why this is so.
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