Question

Calculate the amount of conventional current flowing in the wire. The measurement was made at a location where the horizontal component of the earth's magnetic field is bearth 2 ✕ 10-5 tesla.

Answer 1

It can be deduced that the amount of conventional current that is flowing in the wire is 0.1608 A.

What is a conventional current?

The conventional current simply means the charge per unit time that is transported in a certain direction.

In this case, the magnetic field B of the wire makes an angle θ with the earth's magnetic field BEarth. From the tangent law of magnetism,

B = BEarth × tanθ

= (2 × 10 - 5T) × tan15 = 5.36 × 10-6 T

The current flowing through the wire will be:

I = 2πrB / μ0

I = 2π × (6 × 10-3m)(5.36 × 10-6 T) / (4π × 10 - 7)

I = 0.1608 A

Therefore, the amount of conventional current that is flowing in the wire is 0.1608 A.

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