Which state in India is known for its extensive use of canal irrigation?

With the help of a labelled diagram, explain the working of a step-up transformer.

Give reasons to explain the following:

(i) The core of the transformer is laminated.

(ii) Thick copper wire is used in windings.

If the point charge is  moved to a distance $d$ from the centre of the square and the side of the square is doubled, explain how the electric flux will be affected.

A particle of mass $m$ and charge $(–q)$ enters the region between the two charged plates initially moving along $\mathrm{x}$-axis with speed ${\upsilon }_x$.The length of plate is $L$ and an uniform electric field $E$ is maintained between the plates.
(a) Show that the vertical deflection of the particle at the far edge of the plate is $qE{L}^2/\left(2m{\upsilon }_x^2\right).$ Compare this motion with motion of a projectile in gravitational field.

(b) Suppose that the particle is an electron projected with velocity ${\mathrm{\upsilon }}_{\mathrm{x}}=2.0\times {10}^6 {\mathrm{ms}}^{–1}$. If $E$ between the plates separated by $0.5 \mathrm{cm}$ is $9.1\times {10}^2 \mathrm{N}/\mathrm{C},$ where will the electron strike the upper plate? $(\left|e\right|=1.6\times {10}^{–19}\mathrm{C}, m_e=9.1\times {10}^{–31}\mathrm{k}\mathrm{g}.)$