Speed of the linear path full chapter
Mr. Ali
Distance And Displacement 1. Distance Suppose an object is along the x-axis. In time t₁ the object reaches A from the original point and in time t₂ the object reaches…
Physics12th
Intensity of electric field due to electric dipole
1. Axial or Longitudinal Position Suppose an electric dipole with dipole moment P. We want to calculate the electric field intensity at a point P located at a distance r…
Electric force line and its properties physics
Electric force line Electric force lines are imaginary but the electric fields generated by them are real. A tangent drawn at any point to the electric field line represents intensity…
Importance of Coulomb’s law
Importance of Coulomb’s law When a charge is stationary then only the electric force acts on it. Which was discovered by Coulomb. Therefore it is also called Coulomb force.When a…
Coulomb’s law and electric field full chapter
Electric charge Electricity is the factor by which charge is generated in any object or substance. When a substance becomes electrostatic, the substance acquires charge. Therefore such a substance is…
Photocell working principle class 12
Photocell The photocell (light cell) is a craft technological application of the photoelectric effect. The photocell is a device that converts light energy into electrical energy. It is sometimes called…
Percentage error numerical questions
Error Analysis, Percentage Error *Numerical questions* 1. The width of a road of 20 meters is measured with the help of a 1 meter long rod. What is the maximum…
Dimensions of physical quantities, formula and numericals
Dimensions Of Physical Quantities The dimensions of any physical quantity are those powers which are raised to the basic units to express the unit of that quantity. To write the…
Unit, measurement and basic quantities
Physical quantities All the quantities which are related to any physical phenomena and can be represented by a number and can be measured directly and indirectly are called physical quantities.…
Significant Figures Numericals
Significant figures All the reliable and one doubtful figures included in a measurement are called significant figures. Some rules for calculating significant figures 1. All non-zero numbers are significant. Example–…