LR Circuit

L.R. Circuit

Questions based on L.R. Circuit | Growth and decay of current In L-R Circuit

In an LR circuit connected to a battery, the rate at which energy is stored in the inductor is plotted against time during the growth of current in the circuit. Which of the following best represents the resulation curve?

Consider a circuit consists of resistors, inductor, battery and a switch as shown. Resistance of resistors, inductance of inductor and EMF of battery are indicated. The switch is closed at t=0 . Find time constant of LR circuit during growth of current

A series LR circuit is connected to an ac source of frequency omega and the inductive reactance is equal to 2R. A capacitance of capacitive reactance equal to R is added in series with L and R. The ratio of the new power factor to the old one is

Assertion: An inductance and a resistance are connected in series with an AC circuit. In this circuit the current and the potential difference across the resistance lag behind potential difference across the inductance by an angle pi//2 . Reason: In LR circuit voltage leads the current by phase angle which depends on the value of inductance and resistance both.

In the LR circuit the switch S was closed for a long time. The ideal cell in the circuit has emf E volts.Later on the switch is opened. The current in the resistor of resistance R ohms just after the switch was opened is (XE)/(4R) , then x is

The inductors of the two LR circuits are placed next to each other , as shown in the figure . The values of the self-inductance of the inductors , resistances , mutual - inductance and applied voltages are specified in the given circuit . After both the switches are closed simultaneously , the total work done by the batteries against the induced EMF in the inductors by the time the currents react their steady state values is __________m]

An LR circuit with emf epsilon is connected at t = 0. (a) find the charge Q which flows through the battery during O to t. (b) Calculate the work done by the battery during this period. (d) find the magnetic field energy stored in the circuit at time t. (e) Verify that the results in the three parts above are consistent with enegy conservation.