A resistance of 6 ohm is connected in series with inductor and capacitor having reactances 36 and 44 ohm respectively. WHat i sthe combined impedance?

If a capacitor of capacitance C is connected in series with an inductor of inductance I, then the angular frequency is

A resistance of 900 ohm is connected in series with a galvanometer of resistance 100 ohm. A potential difference of 1 V produces a deflection of 100 division in the galvanometer. Find the figure of merit of galvanometer.

An inductor L of inductance X_L is connected in series with a bulb B and an source. How would brightness of the bulb change when the number of turns of the inductor is reduced an iron rod is inserted in the inductor and a capacitor of reactance X_C=X_L is inserted in series in the circuit. Justify your answer in each case.

Three resistors of 4 ohms, 6 ohms, and 12 ohms are connected in parallel, and the combination is connected in a series with a 4 V battery having an internal resistance of 2 ohms. What is the battery’s current?

An inductor L, a capacitor 20muF and a resistor 10 ohm are connected in series with an a.c. source of frequency 50 Hz. If the current is in phase with the voltage. Calculate the inductance of the inductor.

A potentiometer wire of length 1 m has a resistance 10 ohm. It is connected to 6 V battery in series with a resistance of 5 ohm. Determine the emf of the primary cell which gives a balance point at 40 cm.