COMEDK · Physics · 21. Magnetic Effects of Current
A straight wire of length \(2 \mathrm{~m}\) carries a current of \(10 \mathrm{~A}\). If this wire is placed in uniform magnetic field of \(0.15 \mathrm{~T}\) making an angle of \(45^{\circ}\) with the magnetic field, the applied force on the wire will be
- A \(1.5 \mathrm{~N}\)
- B \(3 \sqrt{2} \mathrm{~N}\)
- C \(3 / \sqrt{2} \mathrm{~N}\)
- D \(3 \mathrm{~N}\)
Answer & Solution
Correct Answer
(C) \(3 / \sqrt{2} \mathrm{~N}\)
Step-by-step Solution
Detailed explanation
The force \(F\) on a current-carrying wire of length \(L\) in a uniform magnetic field \(B\) is given by the formula \(F = I L B \sin(\theta)\), where \(I\) is the current and \(\theta\) is the angle between the wire and the magnetic field. Given values are: \(I = 10 \text{ A}\)…
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