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A 594 Ω resistor, an uncharged 1.3 μF capacitor, and a 6.53 V emf are connected in series. What is the current in milliamps after one time constant? You are supposed to use a constant e can you please include what the value should be for this and all other constants.

Respuesta :

Answer:

6.88 mA

Explanation:

Given:

Resistance, R = 594 Ω

Capacitance = 1.3 μF

emf, V = 6.53 V

Time, t = 1 time constant

Now,

The initial current, I₀ = [tex]\frac{\textup{V}}{\textup{R}}[/tex]

or

I₀ = [tex]\frac{\textup{6.53}}{\textup{594}}[/tex]

or

I₀ = 0.0109 A

also,

I = [tex]I_0[1-e^{-\frac{t}{\tau}}][/tex]

here,

τ = time constant

e = 2.717

on substituting the respective values, we get

I = [tex]0.0109[1-e^{-\frac{\tau}{\tau}}][/tex]

or

I = [tex]0.0109[1-2.717^{-1}][/tex]

or

I = 0.00688 A

or

I = 6.88 mA

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