/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q23E (a) What is the resistance of a ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q23E (page 842)

(a) What is the resistance of a Nichrome wire at 0.0掳Cif its resistance is 100.00惟at 11.5掳C(b) What is the resistance of a carbon rod at 25.8掳Cif its resistance is0.0160惟 at0.0掳C

Short Answer

Expert verified
  1. The resistance of Nichrome wire at0.0掳CisR0=99.5惟
  2. The resistance of carbon rod25.8掳C atRT=0.0158惟

Step by step solution

01

Determine the formula to find the resistance

Use the formula of resistance dependence temperature

02

Determine the resistance of a nichrome wire at 0.0°C

Use the formula found above

Thus , the resistance of nichrome wire at 0.0掳C, if its resistance is 100.00惟at 11.5掳Cis99.5惟

03

Determine the resistance of carbon rod at 25.8°C

Use the formula of resistance dependence temperature

Substitute the values

Here, 鈭�is negative because as the temperature increases, the resistance of the carbon rod decreases.

Therefore, the resistance of carbon rod at 25.8掳C, if its resistance is 0.0160惟at0.0掳Cis role="math" localid="1664188564459" 0.0158惟

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Consider the circuit of Fig. E25.30. (a)What is the total rate at which electrical energy is dissipated in the 5.0-鈩� and 9.0-鈩� resistors? (b) What is the power output of the 16.0-V battery? (c) At what rate is electrical energy being converted to other forms in the 8.0-V battery? (d) Show that the power output of the 16.0-V battery equals the overall rate of consumption of electrical energy in the rest of the circuit.

Fig. E25.30.

A 1.50- 渭F capacitor is charging through a 12.0-鈩� resistor using a 10.0-V battery. What will be the current when the capacitor has acquired14of its maximum charge? Will it be14of the maximum current?

Electrons in an electric circuit pass through a resistor. The wire on either side of the resistor has the same diameter.(a) How does the drift speed of the electrons before entering the resistor compare to the speed after leaving the resistor? (b) How does the potential energy for an electron before entering the resistor compare to the potential energy after leaving the resistor? Explain your reasoning.

BIO The average bulk resistivity of the human body (apart from surface resistance of the skin) is about 5.0惟路m. The conducting path between the hands can be represented approximately as a cylinder 1.6 m long and 0.10 m in diameter. The skin resistance can be made negligible bysoaking the hands in salt water. (a) What is the resistance between the hands if the skin resistance is negligible? (b) What potential difference between thehands is needed for a lethal shock current of 100 mA ? (Note that your result shows that small potential differences produce dangerous currents when the skin is damp.) (c) With the current in part (b),what power is dissipated in the body?

Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. These cyclotrons typically accelerate H-(the hydride ion, which has one proton and two electrons) to an energy of 5MeVto20MeV.This ion has a mass very close to that of a proton because the electron mass is negligible about 12000of the proton鈥檚 mass. A typical magnetic field in such cyclotrons is 1.9T..(a) What is the speed of a 5.0-MeVH-? (b) If the H-has energy 5.0MeVandB=1.9T what is the radius of this ion鈥檚 circulator orbit?
See all solutions

Recommended explanations on Physics Textbooks

Rotational Dynamics

Read Explanation

Astrophysics

Read Explanation

Electricity

Read Explanation

Torque and Rotational Motion

Read Explanation

Solid State Physics

Read Explanation

Force

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.