18th Edition

ISBN: 9781938168161

Author: OpenStax

Publisher: OpenStax

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Textbook Question

Chapter 10, Problem 10.8CYU

Check Your Understanding Digital meters are able to detect smaller currents than analog meters employing galvanometers. How does this explain their ability to measure voltage and current more accurately than analog meters?

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Chapter 10, Problem 10.7CYU

Chapter 10, Problem 1CQ

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Attached is the picture with the question on it, but here are the questions typed out if its hard to read. Also, I need the answers correct to 4 decimal places, thank you!!! Usually wire resistance can be neglected. But we see the effect of it sometimes when a light dims as another high-current device is turned on. In the fridge, the bulb will put out a little less power when the switch to the compressor motor is turned on. a. The voltage source (wiggly circled curve) is 120 V (treat it like a battery) and the wire resistance is 0.5 ohms. The bulb is rated as "75W", which means its power is 75W when connected to 120 V. What is the resistance of the bulb? (ohms) b. When the switch to the motor is open (preventing that branch of the circuit from receiving current, so you can pretend it is not even there), find the power consumed by the bulb, which should be a little lower than 75W because of the wire resistance. (W) c. The motor has a resistance of 10.6 ohms . When the motor…

IN 77. If electric power is transmitted over long distances, the resistance of the wires becomes significant. Why? Which method of transmission would result in less they ofte wires. W F6 84. (a) energy wasted-high current and low voltage or low current and high voltage? Explain your answer. resistane V and b i potentia V is ap 78. The ideal batteries have emfs 12 V and %3D 6.0 V. What are (a) the current current, the dissipation rate in (b) resistor 1 (4.0 2) and (c) resistor 2 (8.0 2), and the energy transfer rate in (d) battery 1 and (e) battery 2? Is energy being supplied or absorbed by (f) battery 1 and (g) battery 2? 79. Consider 85. A series, a applied capacit 4F constar 10.0 2 25.0 V capacit the circuit shown. Find (a) 10.0 2 86. Cc the current the 20.0-2 resistor and (b) potential difference between points a and b. the 20.0 2 75 00'S 80. An automobile battery has an emf of 12.6 V and an internal resistance of 0.0800 2. The headlights together present equivalent resistance 5.00…

The current in a 0.25 F capacitor is i = 4sen2t A. Calculate the voltage, charge, instantaneous power, and energy stored in the capacitor.

Chapter 10 Solutions

University Physics Volume 2

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