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An alternating current is given by I=IA t+IB t. The r.m.s current will be
(2) IA2+IB22
I=IA t+IB t=I0 ( t+ ):
[figure]
I0= IA2+IB2 and Irms= I0 2= IA2+IB22
Answer: (2)
In a series LCR circuit, a resistor of 300 , a capacitor of 25 nF and an inductor of 100 mH are used. For maximum current in the circuit, the angular frequency of the ac source is 104 radians s-1
A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonant frequency is I0. If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be