(t dB sdB 0 For the dš and f shown below, the size of dš x f is |dš x f| ds r Fo

Question

(t dB sdB 0 For the dš and f shown below, the size of dš x f is |dš x f| ds r For the dš and ? shown below, the size of dš xf is |dš xf |-r For the dš and f shown below, the size of dš x f is | dšxf ds Each small piece of dš creates a B field in a different direction, hence dB has to be decomposed into x or L directions before integration. For every pieces of ds in the ring, which ones are constant, circle all a, r, ?, x, 1, cose ) At location P, the total B field direction is along the center axis ) At location P, the total B field direction is at an angle with the center axis. ) When x-0, at the center of the ring, the total B field is zero ) When x-0, at the center of the ring, the total B field is the strongest. Along the center axis, when x increases (the observer goes further away from the loop), the B field increase ) Along the center axis, when x increases (the observer goes further away from the loop), the B field decreases A current loop produces magnetic field similar to a magnetic bar ) We can use right hand rule to determine the direction of magnetic field direction of a current loop. Bending the 4 fingers of the right hand along the current direction in the loop, the thumb will point to the direction of the magnetic field inside the loop ) We can use right hand rule to determine the direction of magnetic field direction of a current loop. Bending the 4 fingers of the right hand along the current direction in the loop, the thumb will point to the direction of the magnetic field outside the loop

Explanation / Answer

a) True

b) False

c) False

d) True

e) True

f) False

g) False

h) True (strongest at center)

i) False

j) True

k) True

l) False

m) True (outside the loop)

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