Assertion:The quantity `L//R` possesses dimensions of time.
Reason:To reduce the rate of increased of current through a solenoid, we should increae time constant L/R.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The quantity L/R posseses the dimension of time. Reason : In order to reduce the rate of increase of current through a solenoid, we hsould increase the time constant.

The current through a solenoid increases at a constant rate, then induced current:

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : To compare the e.m.fs of two cells using a potentiometer, the e.m.f. of the cell in auxillary circuit must be greater than the e.m.fs of both the cells. Reason : The area of cross-section of the wire should be uniform and current through the wire should always be kept constant.

In the circuit shows find the phase difference between the currents through L and R_I

In the circuit shown in the figure, find the current passing through r_L and zener diode.

In the circuit show it the figure Find the phase difference between the currents through L and R.

Show that the unit of CR and L/R are the same as those of time.

In a p-n junction diode, the current I can be expressed as I = I_0 exp ((eV)/(2k_BT)) where I_0 is called the reverse saturation current, V is the voltage across the diode and is positive for forward bias and negative for reverse bias, and I is the current through the diode, k_B is the Boltzmann constant (8.6xx 10^-5 (eV)/K) and T is the absolute temperature. If for a given diode I_0 = 5 xx 10^-12 A and T = 300 K, then - What will be the increase in the current if the voltage across the diode is increased from 0.6 V to 0.7 V?