MCQ
Find out the $e.m.f$. produced when the current changes from $0$ to $1 \,A$ in $10 \,second$, given $L = 10$ $\mu H$
- A$1\, V$
- ✓$1$ $\mu V$
- C$1\, mV$
- D$0.1\,V$
$\Rightarrow \,|e|\, = 10 \times {10^{ - 6}} \times \frac{1}{{10}} = 1\,\mu V$
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$(i)$ The sphere $A$ comes to rest after collision.
$(ii)$ The sphere $B$ will move with a speed of $8\ m/s$ after collision.
$(iii)$ The directions of motion $A$ and $B$ after collision are at right angles.
$(iv)$ The speed of $B$ after collision is $4\ m/s$ . The correct option is