Question
What are characteristics of a wave motion?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
or
When a solenoid that is carrying current is freely suspended, it comes to rest in a particular direction. Why does this happen?

A current of $1.6 mA$ flows through a conductor. If charge on an electron is $-1.6 \times$ $10^{-19}$ coulomb,
find the number of electrons that will pass each second through the cross section of that conductor.
