A series LCRAC circuit has great practical importance. It is used for tuning radio, TV, wireless sets etc. : Under what condition, this circuit is used for tuning?

A series LCR AC circuit has great practical importance. It is used for tuning radio, TV, wireless sets etc. : Obtain an expression for current in a series LCR ac circuit using phasor diagram.

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery used across the potentiometer wire, has an emf of 2V and negligible internal resistance. The potentiometer itself is 4m long. When the resistance 'R_(1)' , connected across the given cell has values of (i) infinity (ii) 9.5Omega , the balancing length on the potentiometer wire are found to be 3m and 2.85m respectively. The value of internal resistance of the cell is

A storage battery of emf 8.0 V and internal resistance 0.5 Omega is being charged by a 120 V dc supply using a series resistor of 15.5 Omega . What is the terminal voltage of the battery during charging? What is the purpose of having a series resistor in the charging circuit?

You are given two capacitors. They can be used individually, in series or in parallel in a circuit Let the four possible values of capacitances be 3µF, 4µF, 12µF and 16µF. If so what are the values of individual capacitances given to you?

A radio can tune over the frequency range of a portion of MW broadcast: (800 KHZ to 1200 KHZ). If its LC circuit has an .effective inductance of 200 n H, what must be the range of its variable capacity?