Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 21: Q25CQ (page 772)

Suppose you are using a multimeter (one designed to measure a range of voltages, currents, and resistances) to measure current in a circuit and you inadvertently leave it in a voltmeter mode. What effect will the meter have on the circuit? What would happen if you were measuring voltage but accidentally put the meter in the ammeter mode?

Short Answer

Expert verified

The voltmeter has a large resistance. So, if we use the multimeter, in voltmeter mode, to measure the current, we will get inaccurate readings.

Step by step solution

01

Multimeter

A measuring device that has the ability to measure multiple properties of an electric circuit, is known as a multimeter. It can measure the potential difference, current, resistance, etc.

02

Explanation of what would happen if while measuring voltage but accidentally put the meter in the ammeter mode?

In the Voltmeter mode, the meter has huge resistance. When it is connected to measure the current then it increases the circuit resistance which reduces the actual current in the ammeter mode. Thus, the measurements will not be accurate.

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.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

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

Suppose you are doing a physics lab that asks you to put a resistor into a circuit, but all the resistors supplied have a larger resistance than the requested value. How would you connect the available resistances to attempt to get the smaller value asked for?

A12.0-Vemf automobile battery has a terminal voltage of16.0Vwhen being charged by a current of10.0A.(a) What is the battery’s internal resistance?(b) What power is dissipated inside the battery?(c) At what rate (in ºC/min) will its temperature increase if its mass is20.0kgand it has a specific heat of0.300kcal/kgx0C, assuming no heat escapes?

Apply the loop rule to loop abcdefgha in Figure 21.25

Some light bulbs have three power settings (not including zero), obtained from multiple filaments that are individually switched and wired in parallel. What is the minimum number of filaments needed for three power settings?

What are the largest and smallest resistances you can obtain by connecting a36.0-Ω, a50.0-Ω, and a700-Ωresistor together?
See all solutions

Recommended explanations on Physics Textbooks

Fundamentals of Physics

Read Explanation

Magnetism

Read Explanation

Particle Model of Matter

Read Explanation

Astrophysics

Read Explanation

Nuclear Physics

Read Explanation

Magnetism and Electromagnetic Induction

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.

Sign-up for free