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(a) The voltage and current in an AC circuit are given by: vt  20cos100t 10V...

(a) The voltage and current in an AC circuit are given by: vt  20cos100t 10V it 10cos100t  20A (i) Determine the average power and power factor. (ii) Determine the apparent power and reactive power. (iii) Sketch the instantaneous power, pt , ensuring you label the units of the axes. Explain every step of your working. (b) Given: F  A.B C  Draw a logic circuit with inputs A, B and C and output F that is implemented entirely with 2-input NOR gates.

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