Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Which physical quantity has the unit Wb/m² ? Is it a scalar or a vector quantity?

Write the condition when terminal voltage and electromotive force of any battery are equal.

A charge 'q' is placed at the centre of a cube of side l.What is the electric flux passing through each face of the cube?

Two particles A and B start from rest and move for equal time on a straight line. The particle A has an acceleration a for the first half of the total time and 2a for the second half. The particle B has an acceleration 2a for the first half and a for the second half. Which particle has covered larger distance?

If we walk barefoot on a nylon mat for some time and touch the metal handle of a door, we get an electric shock. Why does this happen?

A scooter weighing 150kg together with its rider moving at 36km/ hr is to take a turn of radius 30m. What horizontal force on the scooter is needed to make the turn possible?

Name the physical quantity which remains same for microwaves of wavelength 1mm and UV radiations of 1600 Å in vacuum.

Write the importance of Huygens principle. What are the two assumptions of this theory?

In a transistor, both emitter and collector regions are of the same nature of doping. Can these regions be interchanged?