Call Now to Set Up Tutoring:

(888) 888-0446

MCAT Physical : Circuits

Study concepts, example questions & explanations for MCAT Physical

Create An Account

All MCAT Physical Resources

8 Diagnostic Tests 303 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #142 : Electricity

What is the current in a circuit with a $2\Omega$ $\displaystyle 2\Omega$ resistor followed by a $3\Omega$ $\displaystyle 3\Omega$ resistor that are both in parallel with a $5\Omega$ $\displaystyle 5\Omega$ resistor? The voltage supplied to the circuit is 5V.

Possible Answers:

$\displaystyle 2A$

0.25A $\displaystyle 0.25A$

$\displaystyle 5A$

$\displaystyle 1A$

1.5A $\displaystyle 1.5A$

Correct answer:

$\displaystyle 2A$

Explanation:

Resistors in serries add according to the formula:

$R_{f}=R_{1}+R_{2}$ $\displaystyle R_{f}=R_{1}+R_{2}$

Resistors in parallel add according to the formula:

$\frac{1}{R_{f}}=\frac{1}R_{1}{}+\frac{1}{R_{2}}$ $\displaystyle \frac{1}{R_{f}}=\frac{1}R_{1}{}+\frac{1}{R_{2}}$

We can find the total equivalent resistance:

$\frac{1}{R_{f}}=\frac{1}{2+3}+\frac{1}{5}=\frac{2}{5}$ $\displaystyle \frac{1}{R_{f}}=\frac{1}{2+3}+\frac{1}{5}=\frac{2}{5}$

$R_f=2.5\Omega$ $\displaystyle R_f=2.5\Omega$

Now we can use Ohm's law to find the current:

V=IR $\displaystyle V=IR$

$I=\frac{V}{R}$ $\displaystyle I=\frac{V}{R}$

Solve:

$I = \frac{5 V}{2.5 \Omega }=2 A$ $\displaystyle I = \frac{5 V}{2.5 \Omega }=2 A$

Report an Error

Example Question #61 : Circuits

A $\small 12V$ $\displaystyle \small 12V$ battery supplies power to a circuit with a current of $\small 16A$ $\displaystyle \small 16A$ . What is the resistance in this circuit?

Possible Answers:

$0.75\Omega$ $\displaystyle 0.75\Omega$

$1.33\Omega$ $\displaystyle 1.33\Omega$

$9\Omega$ $\displaystyle 9\Omega$

$192\Omega$ $\displaystyle 192\Omega$

$12\Omega$ $\displaystyle 12\Omega$

Correct answer:

$0.75\Omega$ $\displaystyle 0.75\Omega$

Explanation:

To find resistance from voltage and current, we will need to use Ohm's law:

V=IR $\displaystyle V=IR$

$R= \frac{V}{I}$ $\displaystyle R= \frac{V}{I}$

We are given the voltage and current, allowing us to solve for the resistance.

$R = \frac{12V}{16A} = 0.75\Omega$ $\displaystyle R = \frac{12V}{16A} = 0.75\Omega$

Report an Error

View MCAT Chemical and Physical Foundations of Biological Systems Tutors

Christopher
Certified Tutor

Rose-Hulman Institute of Technology, Bachelor of Science, Physics. University of Washington, Master of Science, Physics.

View MCAT Chemical and Physical Foundations of Biological Systems Tutors

Joseph
Certified Tutor

Rutgers University-New Brunswick, Bachelor in Arts, Chemistry. Rutgers Graduate School of Biomedical Sciences, Current Grad S...

View MCAT Chemical and Physical Foundations of Biological Systems Tutors

Zehra
Certified Tutor

Albion College, Bachelor, Biochemistry . Wayne State University, Master's/Graduate, Medicine .

All MCAT Physical Resources

8 Diagnostic Tests 303 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

Algebra Tutors in Phoenix, Math Tutors in Philadelphia, SAT Tutors in Phoenix, English Tutors in Houston, French Tutors in San Francisco-Bay Area, MCAT Tutors in Atlanta, SAT Tutors in Boston, Spanish Tutors in Washington DC, SAT Tutors in Miami, Statistics Tutors in Atlanta

Popular Courses & Classes

LSAT Courses & Classes in Boston, SSAT Courses & Classes in San Francisco-Bay Area, GMAT Courses & Classes in Philadelphia, MCAT Courses & Classes in Dallas Fort Worth, GMAT Courses & Classes in Atlanta, ACT Courses & Classes in Seattle, GMAT Courses & Classes in Seattle, SAT Courses & Classes in Chicago, SSAT Courses & Classes in Boston, GMAT Courses & Classes in Denver

Popular Test Prep

MCAT Test Prep in Houston, LSAT Test Prep in San Francisco-Bay Area, SSAT Test Prep in Philadelphia, SSAT Test Prep in Boston, ISEE Test Prep in Miami, GRE Test Prep in Phoenix, GMAT Test Prep in Denver, GMAT Test Prep in Los Angeles, ISEE Test Prep in Seattle, MCAT Test Prep in Philadelphia

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

MCAT Physical : Circuits

Study concepts, example questions & explanations for MCAT Physical

All MCAT Physical Resources

Example Questions

Example Question #142 : Electricity

Example Question #61 : Circuits

All MCAT Physical Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: