Two circular coils X and Y have equal number of turns and carry equal currents in the…
Physics · JEE Advanced · NTA Exams — Magnetic Effects of Current and Magnetism
Two circular coils X and Y have equal number of turns and carry equal currents in the same sense and subtend same angle at point O. If the smaller coil X is midway between O and Y, and we represent the magnetic field due to coil Y at O as By and that due to smaller coil X at O as Bx, then
- \(\frac{B_{y}}{B_{x}}=1\)
- \(\frac{B_{y}}{B_{x}}=2\)
- \(\frac{\mathrm{B}_{\mathrm{y}}}{\mathrm{~B}_{\mathrm{x}}}=\frac{1}{2}\)
- \(\frac{\mathrm{B}_{\mathrm{y}}}{\mathrm{~B}_{\mathrm{x}}}=\frac{1}{4}\)
Answer
(C) B _ y ~B _ x = 1 2
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