MCQ
Density of Nucleus is:
- ✓$10^{17} kg / m ^3$
- B$10^{19} kg / m ^3$
- C$10^6 kg / m ^3$
- D$10^2 kg / m ^3$
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Reason $(R):$ Power factor of series $R-L$ circuit is given by $\cos \theta=\frac{2 R }{\sqrt{ R ^2+\omega^2 L ^2}}$
$\overrightarrow{ B }=2 \times 10^{-8} \sin \left(0.5 \times 10^{3} x +1.5 \times 10^{11} t \right) \hat{ j } T$ The amplitude of the electric field would be.
