An infinite ladder is constructed with 1Ω and 2Ω resistors as shown in figure.

(a) Find the effective resistance between the points A and B.

(b) Find the current that passes through the 2Ω resistor nearest to the battery.

In the circuit shown in Fig.14.20, find the value of R_C.

For the transistor circuit shown in Fig.14.19, evaluate V_E, R_B, R_E given I_C = 1 mA, V_CE = 3V, V_BE = 0.5 V and V_CC = 12 V, β = 100.

Let there be n resistors R₁ ............R_n with R_max = max (R₁......... R_n) and R_min = min {R₁ ..... R_n}. Show that when they are connected in parallel, the resultant resistance R_P< R_min and when they are connected in series, the resultant resistance R_S > R_max. Interpret the result physically.

Assuming the ideal diode, draw the output waveform for the circuit given in Fig. 14.17. Explain the waveform.

Consider the circuit arrangement shown in Fig 14.16 (a) for studying input and output characteristics of n-p-n transistor in CE configuration.

Select the values of R_B and R_C for a transistor whose V_BE = 0.7 V, so that the transistor is operating at point Q as shown in the characteristics shown in Fig. 14.16 (b).

Given that the input impedance of the transistor is very small and V_CC = V_BB = 16 V, also find the voltage gain and power gain of circuit making appropriate assumptions.

Two cells of emf E₁ and E₂ have internal resistance r₁ and r₂. Deduce an expression for equivalent emf of their parallel combination.

In the circuit shown in Fig.14.14, when the input voltage of the base resistance is 10V, V_be is zero and V_ce is also zero. Find the values of I_b, I_c and β.

If each diode in Fig. 14.13 has a forward bias resistance of 25 �Ω and infinite resistance in reverse bias, what will be the values of the current I₁, I₂, I₃ and I₄?

Kirchhoff ’s junction rule is a reflection of