d'q dq 1 The charge q in an electric circuit at time t satisfies the equation L- +R dt? a=E, where dt L, R. C and E are constants. Solve the equation given L = 2 H, C = 200 × 10“ F and E = 250 V, when (a) R = 200 2 and (b) R is negligible. Assume that when t=0, q =0 and dt Ans. : 1 1 %3D 20 20 b) 1 - cos 50t) (1-c 20

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.