MCQ
Cohesive force is experienced between
- AMagnetic substances
- BMolecules of different substances
- ✓Molecules of same substances
- DNone of these
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Reason : The high energy charged particles from the sun are deflected to polar regions by the magnetic field of the earth.
$I=5 \sin (120 \pi t) A$
How long will the current take to reach the peak value starting from zero?