1.

A 100 Omega resistor is connected to a 200V, 50 Hz ac supply. (a) What is the rms value of current in the circuit ? (b) What is the net power consumedover a fully cycle ?

Answer»

SOLUTION :(a) `I_(rms) = ( V_(rms)) /( |Z|)`
`= ( V_(rms))/( R ) ( :. ` Here `|Z |= R )`
`= ( 220)/( 100)`
`= 2.2 A`
(b) `P = ( V_(rms)^(2))/ (R )` ( For purely RESISTIVE AC CIRCUIT )
`((220)^(2))/( 100)`
`:. P = 484 W`


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