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a current of i(t)=3cos(t)-4sin(t)A is made to flow through an RLC branch with R=10ohms and L=10mH. Find an expression for the time variation of the...

1.a current of i(t)=3cos(t)-4sin(t)A is made to flow through an RLC branch with R=10ohms and L=10mH. Find an expression for the time variation of the current through the branch.

2. the current through a 10microF capacitor is given by i(t)=0.1sin(2wt)A. Find the peak voltage at a frequency f=(a)1/20Hz
b. 2Hz
c. 1KHz
d. 20MHz

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