AP EAMCET · PHYSICS · Magnetic Effects of Current
Two long straight parallel conductors A and B carrying currents 4.5 A and 8 A respectively are separated by 25 cm in air. The resultant magnetic field at a point which is at a distance of 15 cm from conductor A and 20 cm from conductor B is
- A \(2 \times 10^{-5} \mathrm{~N}\)
- B \(2 \times 10^{-4} \mathrm{~N}\)
- C \(10^{-5} \mathrm{~N}\)
- D \(10^{-4} \mathrm{~N}\)
Answer & Solution
Correct Answer
(C) \(10^{-5} \mathrm{~N}\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{I}_1=4.5 \mathrm{~A}, \mathrm{I}_2=8 \mathrm{~A} \\ & \mathrm{r}_1=15 \mathrm{~cm}, \mathrm{r}_2=10 \mathrm{~cm} \end{aligned}\) \(\therefore \quad\) Magnetic field at P is…
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