TS EAMCET · Physics · Magnetic Effects of Current
A magnetic field of \(5 \times 10^{-5} \mathrm{~T}\) is produced at a perpendicular distance of \(0.2 \mathrm{~m}\) from a long straight wire carrying electric current. If the permeability of free space is \(4 \pi \times 10^{-7} \mathrm{~T} \mathrm{~m} / \mathrm{A}\). The current passing through the wire in \(\mathrm{A}\) is
- A 45
- B 40
- C 50
- D 30
Answer & Solution
Correct Answer
(C) 50
Step-by-step Solution
Detailed explanation
Given, magnetic field, \(B=5 \times 10^{-5} \mathrm{~T}\) and \[ \begin{aligned} r & =0.2 \mathrm{~m} \\ \mu_0 & =4 \pi \times 10^{-7} \mathrm{mT} / \mathrm{A} \end{aligned} \] Magnetic field produced by long straight current (I) carrying wire is given by…
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