TS EAMCET · Physics · Magnetic Effects of Current
A long straight rod of diameter 4 mm carries a steady current ' \(i\) '. The current is uniformly distributed across its cross-section. The ratio of the magnetic fields at distances 1 mm and 4 mm from the axis of the rod is
- A \(1: 2\)
- B \(1: 4\)
- C \(4: 1\)
- D \(1: 1\)
Answer & Solution
Correct Answer
(D) \(1: 1\)
Step-by-step Solution
Detailed explanation
\(\mathrm{R}=2 \mathrm{~mm}\),…
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