A rectangular loop of wire that can rotate about an axis through its center is placed between the poles of a magnet in a magnetic field with a strength of

0.40 \mathrm {~T}

, as shown in the figure. The length of the loop

L

0.16 \mathrm {~m}

and its width

w

0.040 \mathrm {~m}

. What is the magnetic flux through the loop when the plane of the loop makes an angle of

60 ^ { \circ }

with the magnetic field?
$A rectangular loop of wire that can rotate about an axis through its center is placed between the poles of a magnet in a magnetic field with a strength of 0.40 \mathrm {~T} , as shown in the figure. The length of the loop L is 0.16 \mathrm {~m} and its width w is 0.040 \mathrm {~m} . What is the magnetic flux through the loop when the plane of the loop makes an angle of 60 ^ { \circ } with the magnetic field? A) 0.80 \mathrm {~T} \cdot \mathrm { m } ^ { 2 } B) 2.6 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 } C) 1.3 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 } D) 2.2 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 } E) 0 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$

A)

0.80 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }

2.6 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 }

1.3 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 }

2.2 \times 10 ^ { - 3 } \mathrm {~T} \cdot \mathrm { m } ^ { 2 }

0 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }

The Coil of an Ac Generator Has 50 Loops and a Cross-Sectional

Multiple Choice

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