Physics Past Questions and Answers

In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 6 ohms,the value of the unknown resistance X is

Which of the following is a set of vectors?

The magnitude of the resultant of two mutually perpendicular forces, F<sub style='font-size: smaller;'>1</sub> and F<sub style='font-size: smaller;'>2</sub> is 13N, if the magnitude of F<sub style='font-size: smaller;'>1</sub> is 5N, what is the magnitude of F<sub style='font-size: smaller;'>2</sub>?

Two points on a velocity time-graph have coordinates (5s, 10ms<sup style='font-size: smaller;'>-1</sup>) and (20s, 20ms<sup style='font-size: smaller;'>-1</sup>). Calculate the mean acceleration between the two points

A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the