1.

Current of 50/pi Hz frequency is passing | through an A.C. circuit having series combination of resistance R = 100Omega and inductor L = sqrt3H. The phase difference between the voltage and current is …..

Answer»

`30^@`
`45^@`
`60^@`
`90^@`

SOLUTION :`tan phi=(WL)/R` [L-R SERIES of CIRCUIT]
`=(100xxsqrt3)/100`
`f=50/pi rArr 2pif =100`
`therefore (omega)` = 100 rad/sec
`=sqrt3`
`= phi=60^@`


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