Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Coulomb’s force between two stationery charges is also:

Which of one is correct

(a)

(b)

(c)

(d)

Which one of the relation is correct between time period and number of orbits while an electron is revolving in a orbit

(a)

(b)

(c)

(d)

A capacitor with no dielectric is connected to a battery at t = 0. Consider a point A in the connecting wires and a point B in between the plates.

An AC source rated 100V (rms) supplies a current of 10A (rms) to a circuit. The average power delivered by the source:

1. Must be 1000W.
2. May be 1000W.
3. May be greater than 1000W.
4. May be less than 1000W.

In a transistor configuration b-parameter is

(a)

(b)

(c)

(d)

The i-V characteristic of a P-N junction diode is shown below. The approximate dynamic resistance of the P-N junction when a forward bias of 2volt is applied

(a)  1 W

(b)  0.25 W

(c)  0.5 W

(d)  5 W

In a semiconductor:

Which of the following are not units of self inductance?

Identify the type of conductor in which the variation of current with potential difference may depend upon the sign of the potential difference applied.