An inductor L and a resistor R are connected in series to a battery, through a key/switch. Show graphically, how current decreases with time when the key/switch is opened.

A solenoid L and a resistor R are connected in series to a battery, through a switch. When the switch is put on, current I flowing through it varies with time t as shown in which of the graphs given below : **

An inductor L and a resistance R are connected in series with a battery of emf E and a switch. Initially the switch is open. The switch is closed at an instant t = 0. Select the correct alternatives

Figure shows an inductor L and a resistor R connected in parallel to a battery through a switch. The resistance R is the same as that of the coil L. Two identical bulbs are put in each arm of the circuit? (i) Which of the bulb lights up earlier when switch S is closed? (ii) Will the bulbs be equally bright after some time?

An inductor (L =0.03 H) and a resistor (R = 0.15k(Omega)) are connected in series to a battery of 15 V EMF in a circuit shown below. The key K_(1) is opened and Key K_(2) is closed simultaneously. At t =1 ms, the current in the circuit will be (e^(5) = 150)

An inductor of inductance L = 8 H and a resistor of resistance R = 2Ω are connected in series with a battery of emf E = 10 V as shown in the figure. If the switch is closed at t = 0, then the voltage drop across the inductor at t = 1 s will be in volts)

An inductor is connected to a battery through a switch. Explain why the emf induced in the inductor is much larger when the swithc is opened as compared to the emf induced when the switch is closed.

Figure shows a circuit consisting of an ideal cell, an inductor L , and a resistor R , connected in series. Let switch S be closed at t = 0 . Suppose at t = 0 , the current in the inductor is i_(o) , then find out the equation of current as a function of time.

Figure shows a circuit consisting of an ideal cell, an inductor L , and a resistor R , connected in series. Let switch S be closed at t = 0 . Suppose at t = 0 , the current in the inductor is i_(o) , then find out the equation of current as a function of time.

An inductor (L =0.03 H) and a resistor (R = 0.15kOmega) are connected in series to a battery of 15 V EMF in a circuit shown below. The key K_1 has been kept closed for a long time. Then at t=0 The key K_(1) is opened and Key K_(2) is closed simultaneously. At t =1 ms, the current in the circuit will be (e^(5) = 150)

A resistor R ,an inductor L , and a capacitor C are connected in series to an oscillator of freqency upsilon .if the resonant frequency is upsilon_(r) , then the current lags behind voltage, when: