Magnetic Field 1. Please answer the following conceptual questions a) Describe t

Question

Magnetic Field 1. Please answer the following conceptual questions a) Describe the two fundamental sources of a magnetic field. b) A current / passes through the wire as shown. Describe the two sources of a magnetic field at point P. Can the net magnetic field possibly be zero at point P? If not, what is the direction of the net field? 2. The net magnetic field at point P is 3 both wires are very long. Find the magnitude and direction of the current in the lower wire. into the pag e. You may assume that s 10 A 4.0 cm 4.0 cm

Explanation / Answer

1. given

a. the two fundamental sources of magnetic fields are magnetic poles and currnets

magnetic poles ar eparts of magnets and they produce magnetic fields due to the metrial propery

currents on the other hand cause magnetic fields as well

b. at Point P

the two sources of magnetic field are a.. the long wire

b.. the circular poart

c. the magnetic field at P cannot be 0 as both the currents will prodce a magnetic field in the same directnois which will ad dup

2. current in lower wire = i

so

30*10^-6 = 2*10^-7*(10/0.08 + i/0.04)

i = 1 A

to the right

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