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1. In the circuit shown below, the capacitor initially has a voltage across it 4 Volts (at t = 0).
a. Write down the expression for VC (t) when the switch is closed.
b. Write down the expression for IC (t) when the switch is closed.
c. Find the initial current when the switch is closed.
d. What will be the final voltage across the capacitor, and how long will it take the capacitor to reach that voltage?
e. What is VC after one time constant has passed?
f. How long will it take for the capacitor to get to VC = 20 Volts?
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Q. In a GLC parallel circuit excited by a current source i(t), for G = 0.5S, L = 3H, and C = 0.5 F, determine i(t) if the inductor current iL(t) = 12e -0.5t .
if load is removed so which motor will run fast? series or shunt?
The dielectric constant of air is practically taken as (A) more than unity. (B) Unity. (C) less than unity. (D) Zero.
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We can use Ampere's Law to calculate the magnetic field in the core.
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