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Р [12]35. A piece of wire is bent in the shape shown (two 32.6 cm straight sections and a 3/4 of a circle section with radius
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Answer #1

Magnetic field at point P due to two straight wire is zero because they pass through the point P. ​​(Subtends 0°).

​​Hence option a is false

Option B is also false as in this case it is easy to find magnetic field using Biot sawart Law.

Option C is true

Option D is false as there is no magnetic field due to vertical section wire.

Option E is alse false as magnetic field at point P is not exactly zero because magnetic field due to 3/4 circle section is given by : 3\muo×I/8r where I is current and r is radius. i.e B≠0

Option F is true as magnetic field is calculated using Biot sawart law.

Hence option C and F are true.

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