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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

Consider the series RC circuit shown in Figure 18.17 for which R = 75.0 kΩ, C = 25.0 µF, and ε = 12.0 V. Find (a) the time constant of the circuit and (b) the charge on the capacitor one time constant after the switch is closed.

(a)

To determine
The time constant τ of the circuit

Explanation

Given Info: Resistance R is 75.0 , Capacitance C is 25.0μF

Explanation:

Formula to calculate time constant τ is,

τ=RC

  • τ is the time constant
  • R is the Resistance
  • C is the capacitance

Substitute, 75.0 for R, and 25.0μF for C, to find τ .

τ=(75

(b)

To determine
The charge on the capacitor q(t) after the one time constant.

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