0
answers
0
watching
110
views
23 Nov 2019
PROBLEM2: Earth as amagnet
The molten iron core and surroundingmagnetized rockof the planet create a magnetic dipole fieldwe
experience at the surface of theEarth. The strengthEarthâs magnetic field is roughly 0.3Gauss in the
equatorial regions onthe surface of the Earth androughly 0.6 Gauss in the region aroundthe poles.
a) Describe how youwould find the magnetic dipolemoment of the Earth(?μEarth).
(b) Suppose you are at the equator. You place a loop of wire ontheground and connect a battery so that current flows clockwise throughthe loop. Drawa diagram of this situation, includingthe
direction of the current in loop, thecardinaldirections (N, S, E, W), and the direction ofmagnetic
field. The moment you connect thebattery (assumingit creates a large enough current inthe
loop), which edge of the loop willârise upâ fromthe ground (N, S, E,W)?
(c) If you take your loop of wire andbattery to theNorth pole, what happens the momentyou
connect the battery to theloop?
PROBLEM2: Earth as amagnet
The molten iron core and surroundingmagnetized rockof the planet create a magnetic dipole fieldwe
experience at the surface of theEarth. The strengthEarthâs magnetic field is roughly 0.3Gauss in the
equatorial regions onthe surface of the Earth androughly 0.6 Gauss in the region aroundthe poles.
a) Describe how youwould find the magnetic dipolemoment of the Earth(?μEarth).
(b) Suppose you are at the equator. You place a loop of wire ontheground and connect a battery so
(b) Suppose you are at the equator. You place a loop of wire ontheground and connect a battery so
that current flows clockwise throughthe loop. Drawa diagram of this situation, includingthe
direction of the current in loop, thecardinaldirections (N, S, E, W), and the direction ofmagnetic
field. The moment you connect thebattery (assumingit creates a large enough current inthe
loop), which edge of the loop willârise upâ fromthe ground (N, S, E,W)?
(c) If you take your loop of wire andbattery to theNorth pole, what happens the momentyou
connect the battery to theloop?
