Question 102: Magnetism and Matter

Question

Match List I with List II

List I(Current configuration)

List II(Magnitude of Magnetic Field at point O)

A.

I.
$${B_0} = {{{\mu _0}I} \over {4\pi r}}[\pi  + 2]$$

B.

II.
$${B_0} = {{{\mu _0}} \over {4 }}{I \over r}$$

C.

III.
$${B_0} = {{{\mu _0}I} \over {2\pi r}}[\pi  - 1]$$

D.

IV.
$${B_0} = {{{\mu _0}I} \over {4\pi r}}[\pi  + 1]$$

Choose the correct answer from the options given below :

Accepted Answer

$A ightarrow B_{0}=\frac{-\mu_{0} I}{4 \pi r}+\frac{\mu_{0} I}{2 r}-\frac{\mu_{0} I}{4 \pi r}$
$$
B_{0}=\frac{\mu_{0} I}{2 \pi r}(\pi-1) \quad A ightarrow 	ext { III }
$$
$B ightarrow B_{0}=\frac{\mu_{0} I}{4 \pi r}+\frac{\mu_{0} I}{4 r}+\frac{\mu_{0} I}{4 \pi r}$
$$
B_{0}=\frac{\mu_{0} I}{4 \pi r}(\pi+2) \quad B ightarrow I
$$
$C ightarrow B_{0}=\frac{\mu_{0} I}{4 \pi r}+\frac{\mu_{0} I}{4 r}+0$
$B_{0}=\frac{\mu_{0} I}{4 \pi r}(\pi+1) \quad \quad \mathrm{C} ightarrow \mathrm{IV}$
D. $ightarrow B_{0}=\frac{\mu_{0} I}{4 r} \quad \quad \mathrm{D} ightarrow \mathrm{II}$

Answer

A-III, B-IV, C-I, D-II

Answer

A-II, B-I, C-IV, D-III

Answer

A-III, B-I, C-IV, D-II

Answer

A-I, B-III, C-IV, D-II

Magnetism and Matter

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