Practice core concepts of measurement, motion, force, energy, waves, electricity, magnetism and modern physics.
Questions are tracked as practiced when you open Show Answer & Explanation. Tracking stays only in this browser tab and no subject-test result is saved.
Which principle explains why airplanes can generate lift while flying?
Which form of energy is stored in a stretched rubber band?
What is the main function of a transformer's core?
What is the term for the minimum energy required to remove an electron from an atom?
The formula for electric power in terms of voltage and current is:
The formula for kinetic energy is:
What is the term for energy possessed by an object due to its motion?
A magnetic field is produced around a conductor when it carries:
A body moving in a circle at constant speed has:
What is the term for the point where all the weight of an object appears to act?
The SI unit of electric current is:
Which of the following is a semiconductor material?
What is the term for the point at which a projectile reaches its highest vertical position?
A transformer works on the principle of:
Which principle explains that pressure applied to an enclosed fluid is transmitted equally in all directions?
Which law explains why a rocket moves forward by expelling gas backward?
A p-n junction is formed by combining:
The efficiency of a heat engine is defined as the ratio of:
Which device is used to step up or step down alternating voltage in power transmission?