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Help! How to find A and B- Du Point Analysis- Calculate and interpret.docx

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help me for included unit Chapter 30, Problem 058 Suppose the emf of the battery in the circuit shown in the figure varies with time t so that the current is given by i(t) 2.005.00t, where i is in amperes and t is in seconds. Take R = 2.00 ? and L 5.50 H, and find the emf required of the battery at t = 4.00 s. Number Units Solution in accordance with Kirchhoff\' law we have in the considered circuit two electromotive forces E and -Ldi/dt and so E-Ldi/dt=iR di/dt = 5 So, E = iR + L*di/dt E=((2+5t)x2)+( 5.5x5) replace t with t=4s in order to find out the electromotive force of the at that very time. We get: E = 71.5 V .

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- help me for included unit Chapter 30, Problem 058 Suppose the emf of the battery in the circuit shown in the figure varies with time t so that the current is given by i(t) 2.005.00t, where i is in amperes and t is in seconds. Take R = 2.00 ? and L 5.50 H, and find the emf required of the battery at t = 4.00 s. Number Units Solution in accordance with Kirchhoff' law we have in the considered circuit two electromotive forces E and -Ldi/dt and so E-Ldi/dt=iR di/dt = 5 So, E = iR + L*di/dt E=((2+5t)x2)+( 5.5x5) replace t with t=4s in order to find out the electromotive force of the at that very time. We get: E = 71.5 V

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