Question

The voltage and current at the terminals of the circuit element in Fig. 1.5 are zero fort < 0. Fort 2 0 they areV =75 ~75e-1000t V,l = 50e -IOOOt mAa) Fund the maximum value of the power delivered to the circuit.b) Find the total energy delivered to the element.

Answer 1

Answer:

maximum value of the power delivered to the circuit =3.75W

energy delivered to the element = 3750e^{ -IOOOt} - 7000e ^{-2OOOt} -3750

Explanation:

V =75 - 75e-1000t V

l = 50e -IOOOt mA

power = IV = 50 * 10^-3 e -IOOOt * (75 - 75e-1000t)

=50 * 10^-3 e -IOOOt *75 (1 - e-1000t)

=

maximum value of the power delivered to the circuit =3.75W

the total energy delivered to the element = $\int\limits^t_0 {3.75(e^{ -IOOOt} - e ^{-2OOOt} )} , dx$

$3750e^{ -IOOOt} - 7000e ^{-2OOOt} -3750$

Answer 2

The maximum value of the power delivered to the circuit is =3.75W

When the energy delivered to the element is = 3750e^{ -IOOOt} - 7000e ^{-2OOOt} -3750

Explanation:

• When the V =75 - 75e-1000t V
• So that, l = 50e -IOOOt mA
• After that the power = IV = 50 * 10^-3 e -IOOOt * (75 - 75e-1000t)
• Now, =50 * 10^-3 e -IOOOt *75 (1 - e-1000t)  

• =  When The maximum value of the power it would be delivered to the circuit =3.75W

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