I. for current amplification.

II. for voltage stabilization.

III. for power amplification.

IV. as a switch.

which of the above are the uses of transistor?

The dimension of electromotive force are?

The resultant of two forces 12N and 5N is 13N. What is the angle between the two forces?

A force F required to keep a 5 kg mass moving round a cycle of radius 3.5 m at a speed of 7 ms-1. What is the speed, if the force is tripled?

A body of mass 4 kg resting on a smooth horizontal plane is simultaneously acted upon by two perpendicular forces 6N and 8N. Calculate the acceleration of the motion