AP EAMCET · PHYSICS · Magnetic Effects of Current
A straight wire carrying a current of \(12 \mathrm{~A}\) is bent into a semi-circular arc of radius \(2 \mathrm{~cm}\) as shown in the figure. Then the magnetic field due to the straight segments at the centre of the arc is
- A \(12 \mathrm{~T}\)
- B \(6 \mathrm{~T}\)
- C \(24 \mathrm{~T}\)
- D 0
Answer & Solution
Correct Answer
(D) 0
Step-by-step Solution
Detailed explanation
(dFor a point \(\mathrm{O}\) d \(\overrightarrow{\mathrm{l}}\) and \(\overrightarrow{\mathrm{r}}\) for each element of the straigh segment \(\mathrm{AB}\) and \(\mathrm{DE}\) are parallel. Therefor, \(\mathrm{d} \overrightarrow{\mathrm{l}} \times \overrightarrow{\mathrm{r}}=0\)…
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