Assertion (A): A capacitor with imperfect dielectric can be represented by a capacitance in parallel with resistance.

Reason (R): For imperfect dielectrics, dielectric constant has real and imaginary parts.

Assertion (A): As the length of the resonant antenna is increased, the number of lobes increases and the direction of the major lobes is closer and closer to the direction of the diode.

Reason (R): As the length increases, the current distribution along the wire becomes more and more uniform.

1. [5 - 4 e^-2t] u(t)
2. [e^-2t + 5] u(t)
3. d(t) + 8 e^-2t u(t)
4. d(t) + 4 e^-2t u(t)

Match the following:

1. Open collector output
2. Totem pole output
3. Tristate output

1. common Emitter
2. common Base
3. emitter follower
4. emitter follower using Darlington pair.