šŸ·ļø LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION ā†’
Log in
Physics
2
answers
0
watching
134
views

For a particular scientific experiment, it is important to be completely isolated from any magnetic field, including the earth's field. The earth's field is approximately 50 uT, but at any particular location, it may be a bit more or less than this. A 1.00-m-diameter current loop with 200 turns of wire is adjusted to carry a current of 0.215 A; the coil's field at the center is exactly equal to the earth's field in magnitude but opposite in direction so that the total field at the center of the coil is zero. What is the strength of the earth's magnetic field at this location?

Watch
2
answers
0
watching
134
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Supratim Pal
Supratim PalLv10
3 Nov 2020
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

For a particular scientific experiment, it is important to becompletely isolated from any magnetic field, including the earth'sfield. A 1.20 -diameter current loop with 200 turns of wire is setup so that the field at the center is exactly equal to the earth'sfield in magnitude but opposite in direction.

What is the current in the current loop?

Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. If, while sleeping during the day, bats are exposed to a field of a similar magnitude but different direction than the earth's field, they are more likely to lose their way during their next lengthy night flight. Suppose you are a researcher doing such an experiment in a location where the earth's field is 50 at a 60 angle below horizontal. You make a 60 diameter, 200-turn coil around a roosting box; the sleeping bats are at the center of the coil. You wish to pass a current through the coil to produce a field that, when combined with the earth's field, creates a net field with the same strength and dip angle (60 below horizontal) as the earth's field but with a horizontal component that points south rather than north. What is the necessary current?

(a) The wire loop is shown, a square with 17 cm on a side, is rotated by an external torque at a constant angular velocity in a uniform magnetic field of 0.17 T. What is the maximum of the induced emf, if the loop makes a full turn every 0.24 s, in volts?

Ā 

(b) The induced emf in the generator shown is zero at t = 0. What is the minimal time (in multiples of the period T, i.e. you solve for t/T) after which it has reached 15% of its maximum? Express your answer using two significant figures.
Ā 
(c) A coil has Na turns enclosing an area of A. In a physics laboratory experiment, the coil is rotated during the time interval t from a position in which the plane of each turn is perpendicular to Earth's magnetic field to one in which the plane of each turn is parallel to the field. The magnitude of Earth's magnetic field at the lab location is B. What is the magnitude of the average emf induced in the coil?

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in