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(a) The peak voltage of an a.c. supply i...

(a) The peak voltage of an a.c. supply is 300 V. What is its r.m.s voltages?
(b) The r.m.s value of current in an ac circuit is 10 A. What is the peak current ?

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(a) Peak voltage of the ac supply, `v_(0)=300V`
Rms voltage is given as:
`V=V_(0))/sqrt(2)`
`(300)/sqrt(2)=212.1V`
(b) Therms value of current is given as:
I=10A
`I_(0)=sqrt(2)I`
`=10sqrt(2)=14.1A `
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