4. A RL-circuit involves a source of electrical energy E (volts), a resistor R (ohms) and an inductor L (henries). It gi

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4 A Rl Circuit Involves A Source Of Electrical Energy E Volts A Resistor R Ohms And An Inductor L Henries It Gi 1 (145.96 KiB) Viewed 39 times

4. A RL-circuit involves a source of electrical energy E (volts), a resistor R (ohms) and an inductor L (henries). It gives rise (under Kirchhoff's Voltage Law) to the differential equation L + RI = E(t) dI dt for the current I (amps). A 12V (volt) battery is connected to an RL-circuit in which the inductance is H (henry) and the resitance is 100 (ohm). (i) (3 marks) Determine the equation of the current in the circuit if the initial current is zero. (ii) (2 marks) Plot the current by hand, making sure to explain carefully all your steps. (iii) (2 marks) Plot the current in MATLAB, and make sure to include the plot and the accompanying code in your submission.