MHT CET · Physics · Magnetic Properties of Matter
An air craft of wing span \(40 \mathrm{~m}\) files horizontally in earth's magnetic field \(5 \times 10^{-5} \mathrm{~T}\) at a speed of \(500 \mathrm{~m} / \mathrm{s}\). The e.m.f. generated between the tips of the wings of the air craft is
- A \(0.5 \mathrm{~V}\)
- B \(1 \mathrm{~V}\)
- C \(1.2 \mathrm{~V}\)
- D \(1.5 \mathrm{~V}\)
Answer & Solution
Correct Answer
(B) \(1 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
The emf generated between the tips of the wings of the air craft is,
\(\begin{aligned}& \varepsilon=\mathrm{Blv} \\& \varepsilon=5 \times 10^{-5} \times 40 \times 500 \\& \varepsilon=4 \mathrm{~V}\end{aligned}\)
\(\begin{aligned}& \varepsilon=\mathrm{Blv} \\& \varepsilon=5 \times 10^{-5} \times 40 \times 500 \\& \varepsilon=4 \mathrm{~V}\end{aligned}\)
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