Call Now to Set Up Tutoring:

(888) 888-0446

AP Physics C Electricity : Using Ohm's Law

Study concepts, example questions & explanations for AP Physics C Electricity

Create An Account

All AP Physics C Electricity Resources

1 Diagnostic Test 46 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : Using Ohm's Law

A simple circuit consists of a $2\ \text{M}\Omega$ resistor that's connected to a battery. How much power is dissipated by the resistor?

Possible Answers:

$7.2*10^{-2}W$

$8*10^{-4}W$

$2*10^{-2}W$

$5.5*10^{-6}W$

$4*10^{-5}W$

Correct answer:

$4*10^{-5}W$

Explanation:

One of the formulas for power is $P=\frac{V^2}{R}$ . We are given the values of the voltage and resistance.

$V=9\ \text{V}$

$R=2\ \text{M}\Omega=2*10^6\ \Omega$

Using these values, we can solve for power.

$P=\frac{(9\ \text{V})^2}{2*10^6\ \Omega}$

$P=4*10^{-5}\ \text{W}$

Report an Error

Example Question #1 : Circuit Relationships

Ps0_resistorcircuit

$R_1=15\Omega,\ R_2=20\Omega,\ R_3=20\Omega$

V=50V

What is the current delivered to the curcuit by the battery?

Possible Answers:

2.0A

0.91A

4.6A

1.1A

Correct answer:

2.0A

Explanation:

Using Ohm's law to solve for the value of the current from the battery requires calculation of the equivalent resistance of the circuit.

$V=IR_{eq}$

The resistors R₂ and R₃ are in parallel with one another. Once combined, their requivalent resistor (R₂₃) is in series with R₁.

Ps0_resistorcircuit_2

The equivalent resistance is thus given by:

$R_{eq}=\left ( \frac{1}{R_{2}} + \frac{1}{R_{3}} \right )^{-1} + R_{1}$

$R_{eq}=\left ( \frac{1}{20\Omega} + \frac{1}{20\Omega} \right )^{-1} + 15\Omega$

$R_{eq}=10\Omega + 15\Omega=25\Omega$

Use this value and the given voltage to solve for the current in the circuit:

$I = \frac{V}{R_{eq}}$

$I=\frac{50V}{25\Omega}=2.0A$

Report an Error

View Tutors

Stephen
Certified Tutor

University of North Carolina at Chapel Hill, Bachelor of Science, Geophysics and Seismology.

View Tutors

Foysal
Certified Tutor

Towson University, Bachelor, Physics . Virginia Commonwealth University, Master of Science, Health Physics.

View Tutors

Magdy
Certified Tutor

Cairo University, Egypt, Bachelor of Science, Electrical Engineering. New Mexico State University-Main Campus, Doctor of Phil...

All AP Physics C Electricity Resources

1 Diagnostic Test 46 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

Computer Science Tutors in San Francisco-Bay Area, Spanish Tutors in Chicago, English Tutors in San Diego, GRE Tutors in San Francisco-Bay Area, GRE Tutors in Chicago, Reading Tutors in Miami, Calculus Tutors in Atlanta, Computer Science Tutors in Washington DC, French Tutors in Houston, SAT Tutors in San Diego

Popular Courses & Classes

Spanish Courses & Classes in San Diego, LSAT Courses & Classes in Los Angeles, SSAT Courses & Classes in Seattle, SSAT Courses & Classes in San Francisco-Bay Area, GRE Courses & Classes in Atlanta, GMAT Courses & Classes in Denver, SSAT Courses & Classes in Dallas Fort Worth, ACT Courses & Classes in Houston, MCAT Courses & Classes in Dallas Fort Worth, ACT Courses & Classes in Washington DC

Popular Test Prep

ISEE Test Prep in Denver, LSAT Test Prep in Los Angeles, ISEE Test Prep in Miami, ACT Test Prep in Washington DC, MCAT Test Prep in Chicago, GRE Test Prep in Seattle, MCAT Test Prep in San Francisco-Bay Area, GRE Test Prep in Atlanta, ISEE Test Prep in Washington DC, SSAT Test Prep in Los Angeles

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

HIGH SCHOOL

GRADUATE SCHOOL

K-8

Search 50+ Tests

math tutoring

science tutoring

foreign languages

elementary tutoring

other

Search 350+ Subjects

AP Physics C Electricity : Using Ohm's Law

Study concepts, example questions & explanations for AP Physics C Electricity

All AP Physics C Electricity Resources

Example Questions

Example Question #1 : Using Ohm's Law

Example Question #1 : Circuit Relationships

All AP Physics C Electricity Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: