In a 100 turn coil, if the flux through each turn is (t3 - 2t)mWb, the magnitude

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Question
In a 100 turn coil, if the flux through each turn is (t³ - 2t)mW_b, the magnitude of the induced emf in the coil at a time of 4 sec is
Options
A. 46 mV
B. 56 mV
C. 4.6 V
D. 5.6 V

Correct Answer

4.6 V

Explanation

E = 100 (3t² - 2) ⟹ 100(46) ⟹ 4600 mV

⟹ 4.6 V.

Electromagnetic Field Theory problems

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C. Maximum velocity of electron increases with decreasing wave length
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4. The most commonly used semiconductor material is
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A. silicon
B. germanium
C. mixture of silicon and germanium
D. none of the above

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A. 0.5 eV above valence band
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D. below the valence band

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Options
A. 12 p_c
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Options
A. 1.8 x 10⁸ m/sec
B. 5 x 10⁸ m/sec
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D. 1.5 x 10⁸ m/sec

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Options
A. 49
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Options
A. 20
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