A fighter plane of length 20 m, wing span (distance from tip of one wing to the tip of the other wing) of 15 m and height 5 m is flying towards east over Delhi. Its speed is $240 m{s}^{-1}.$ The earth's magnetic field over Delhi is $5\times {10}^{-5}T$ with the declination angle $~0^o$ and dip of $\theta$ such that $\sin \theta =\frac{2}{3}.$If the voltage developed is $V_B$ between the lower and upper side of the plane and $V_W$ between the tips of the wings then $V_B and V_W$ are close to :

An inductor $(L=0.03\mathrm{\hspace{0.17em}}\mathrm{H})$ and a resistor $(R=0.15 \mathrm{\hspace{0.17em}}\mathrm{k\Omega })$ are connected in series to a battery of $15\mathrm{\hspace{0.17em}}\mathrm{V}$ E.M.F. in a circuit shown below. The key $K_1$ has been kept closed for a long time. Then at $t=0$, $K_1$ is opened and key $K_2$ is closed simultaneously. At $t=1\mathrm{\hspace{0.17em}}\mathrm{ms}$ , the current in the circuit will be : $\left(\text{Take}, e^5\approx 150\right)$

A square frame of side $10 \mathrm{cm}$ and a long straight wire carrying current $1 \mathrm{A}$ are in the plane of the paper. Starting from close to the wire, the frame moves towards the right with a constant speed of $10 \mathrm{m} {\mathrm{s}}^{-1}$ (see figure). The e.m.f induced at the time the left arm of the frame is at $x=10 \mathrm{cm}$ from the wire is

The figure shows a circular area of tthe radius $R$ where a uniform magnetic field $\overrightarrow{B}$ is going into the plane of the paper and increasing in magnitude at a constant rate. In that case, which of the following graphs, drawn schematically, correctly shows the variation of the induced electric field $E\left(r\right)$?