All High School Physics Resources
Example Questions
Example Question #1 : Magnetism And Electromagnetism
A current of runs through a straight wire. If the resulting magnetic field has a radius of , how strong is the magnetic field?
Possible Answers:
Correct answer:
Explanation:
Ampere's law states:
.
In other words, the magnetic field (), is equal to a constant () times the current () divided by the circumference of the magnetic field it is creating.
We are given the current, the constant, and the radius. Using these values, we can solve for the magnetic field strength.
Notice that the cancels out.
All High School Physics Resources
Popular Subjects
Physics Tutors in San Francisco-Bay Area, ISEE Tutors in Boston, GRE Tutors in Atlanta, Algebra Tutors in Houston, GRE Tutors in New York City, ISEE Tutors in San Diego, Computer Science Tutors in Washington DC, Physics Tutors in Phoenix, Chemistry Tutors in Houston, Computer Science Tutors in Phoenix
Popular Courses & Classes
Spanish Courses & Classes in Boston, LSAT Courses & Classes in San Francisco-Bay Area, MCAT Courses & Classes in Los Angeles, Spanish Courses & Classes in Chicago, GMAT Courses & Classes in San Diego, MCAT Courses & Classes in San Francisco-Bay Area, SSAT Courses & Classes in Dallas Fort Worth, SAT Courses & Classes in Phoenix, SSAT Courses & Classes in Phoenix, GMAT Courses & Classes in Denver
Popular Test Prep
ISEE Test Prep in Chicago, ACT Test Prep in Washington DC, ISEE Test Prep in Los Angeles, ISEE Test Prep in Phoenix, ACT Test Prep in Houston, ISEE Test Prep in Washington DC, SAT Test Prep in Denver, GRE Test Prep in San Diego, GRE Test Prep in Philadelphia, GRE Test Prep in Los Angeles