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decamij
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I'm kinda stuck on this question:
1. Calculate the magnitude ofthe magnetic f ield at a point midway between two
long, parallel wires that are 1 .0 m apar t and have currents of1 0.0 A and 20.0 A,
respectively, ifthe currents are (a) in opposite directions and (b) in the same
direction.
The answer is
(a) 1.2 x 10^-5 T
(b) 4.0 x 10^-6 T
2. Also, this question (i thought it was easy, but i kept on getting 4.0 x 10^-5, but the answer is 1.0 x 10^-5).
A long, solid, copper rod has a circular cross-section ofdiameter 10.0 cm. The
rod has a current of5.0 A, uniformly distributed across its cross-section.
Calculate the magnetic field strength 2.5cm from the centre of the rod.
P.S. At this point, the only equation i am using is
B = (mew)oI
2(pi)r
Where (mew)o is the is a proportionality constant,called the permeability of free space.
1. Calculate the magnitude ofthe magnetic f ield at a point midway between two
long, parallel wires that are 1 .0 m apar t and have currents of1 0.0 A and 20.0 A,
respectively, ifthe currents are (a) in opposite directions and (b) in the same
direction.
The answer is
(a) 1.2 x 10^-5 T
(b) 4.0 x 10^-6 T
2. Also, this question (i thought it was easy, but i kept on getting 4.0 x 10^-5, but the answer is 1.0 x 10^-5).
A long, solid, copper rod has a circular cross-section ofdiameter 10.0 cm. The
rod has a current of5.0 A, uniformly distributed across its cross-section.
Calculate the magnetic field strength 2.5cm from the centre of the rod.
P.S. At this point, the only equation i am using is
B = (mew)oI
2(pi)r
Where (mew)o is the is a proportionality constant,called the permeability of free space.
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