An R-C series circuit is connected to an alternating source of emf V=V0cos100πt, instantaneous current in the circuit is i=5cos100πt+π4A, the value of V0 is [Resistance R used in the circuit is 10Ω ]
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answer is 3.
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Detailed Solution
XCR=tan45o⇒XC=R⇒Z=R2+XC2=2R=102Ω∴V0Z=5⇒V0=5×102 Volt=502 Volt
An R-C series circuit is connected to an alternating source of emf V=V0cos100πt, instantaneous current in the circuit is i=5cos100πt+π4A, the value of V0 is [Resistance R used in the circuit is 10Ω ]