Solve needed.

3. The electrical voltage drop across an inductor, according to Faraday's law, is given by VL = L- di dt where, V1 = voltage drop (V) L = inductance (Henry) i = current (A) t = time (sec) 0 0.15 0.3 0.55 0.8 1.9 0 0.1 0.2 0.3 0.5 0.7 From the above data set, determine the voltage drops at the following time steps for inductance of 4 Henry: (i) t = 0, (ii) t =0.15, (iii) t = 0.4, (iv) t = 0.7. All the results should conform to the accuracy level of O(h2). 4. The following table shows the measured values of volume v (in cubic inches) and the pressure P (in pounds per square. inch) of a gas during its expansion. Work Done = JP dV V 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 P 89.8 68.7 55.0 45.8 39.3 34.4 30.5 27.5 26.0 Estimate the total work done by the gas using a suitable numerical technique