Frame of reference:When the position of a particle in space changes with time, it is said to be in motion. To describe motion, a frame of reference is needed first and foremost. The set of spatial coordinates...
Tension is a special type of force which is applicable in a stretchable body like rope or string. Its direction is towards the pulley. If rope or chain is massless,frictionless or smooth, then tension...
current or voltage we measure for AC are alaways rms(root mean square) value not the actual magnitude so 220 volt ac(rms)= 220*sqrt(2)=311 volt but 220 volt DC alaways gives the magnitude...
It is defined as the angle between resultant current and voltage in AC circuit. it is represented by COS PHI In case of a pure resistor, the angle between the voltage and current is equal to zero hence...