While charging the lead storage battery a) PbSO4 on cathode is reduced to Pb b) PbSO4 on anode is oxidised to PbO2 c) PbSO4 on anode is reduced... View Article
A perfectly insulated, rigid and closed vessel is an example of an isolated system as neither mass nor energy can enter or leave the system. A... View Article
The core of an electromagnet should be of soft iron because soft iron loses all its magnetism when the current in the coil is switched off,... View Article
The effect of gravity on fluid pressure is that it will cause the fluid body to move in the direction of its net acceleration. And it shows the... View Article
The two examples of contact forces are frictional force and applied force. The two examples of noncontact forces are gravitational force and... View Article
Nuclear sizes are expressed in a unit named Fermi. It is a unit of length equal to 10-15 meter that means one femtometer and is used in nuclear... View Article
The SI unit of current is ampere which measures the flow of electric charge across a surface at the rate of one coulomb per second. It is... View Article
The SI unit of temperature as per the International System of Units is Kelvin, represented by the symbol K. Temperatures are always positive on... View Article
Direct current or DC is the one directional flow of electric charge. The frequency of direct current dc is 0 Hz. This is because, the direct... View Article
The rate of change of displacement is called velocity. The velocity of an object, in general, changes during its course of motion. The rate of... View Article
