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JEE Main 2004
Exam
JEE Main
Year
2004
Subject
Physics
Chapter
Electromagnetic Induction

JEE Main 2004 · Physics · Electromagnetic Induction

A metal conductor of length 1 ~m rotates vertically about one of...

A metal conductor of length 1 m1 \mathrm{~m} rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is 0.3×10−4 T0.3 \times 10^{-4} \mathrm{~T}, then the e.m.f. developed between the two ends of the conductor is

Options

  1. Adepends on the nature of the metal used
  2. Bdepends on the intensity of the radiation
  3. Cdepends both on the intensity of the radiation and the metal used
  4. Dis the same for all metals and independent of the intensity of the radiation.

Correct answer

B. depends on the intensity of the radiation

Step-by-step solution

emf. developed is given by \varepsilon_{ind \text{ind }}=\frac{1}{2} \mathrm{~B} \omega \mathrm{R}^2=50 \mu V. \mathrm{V} \text{. }
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