physical significance

Calculations of electric field intensity are of tremendous importance due to the technological applications of electric forces. To determine the trajectories of electrons in a T.V. tube, in an accelerator used in cancer radiotherapy, or of charged particles in a semiconductor electronic device we h..

Significant Figures - It is the expression of accuracy of a physical quantity. The value in digits, accurately known in a measurement plus one digit that is not certain, is called significant figures. Significant figures is directly proportional to the accura..

The significant figures are all those digits which we are absolutely sure of plus those digits that we are not sure of. However, the digits have a meaningful value. This also provides us with information about the extent of uncertainty in measurement. E.g., All the experiments give ans..

These express the degree of accuracy of measurements. It is a statement which gives number of digits up to which we are sure about their accurac..

Arithmetic Operations With Significant Figures - The accuracy of a result is taken to be equal to the least accurate among the numbers, when 2 or more numbers are used to add, subtract, multiply or divide. The number of significant figures in the result, is equal to the number o..

The accuracy of a result is taken to be equal to the least accurate among the numbers, when 2 or more numbers are used to add, subtract, multiply or divide. The number of significant figures in the result, is equal to the number of significant digits in the least accurate one am..

All the digits from 1, 2, 3, 4, ., 9 are significant digits. Zeros (0s) if they occur between non-zero digits, are significant For example, in the number- 325007, 2409, 308, zeros in between the digits are significant. The final zeros (0s) of an approximated number w..

Just as the electric field is described as force per unit charge, electric potential at a point can be described as electrical potential energy per unit charge. This concept is useful in calculations involving energies of charged particles. Not only that, as force is related to work, electric pote..

Measuring instruments have a limit upto which measurements can be made, called as the least count of the instrument. Errors are seen when measuring through various instrument..

Torque is the product of the magnitude of the force and the lever arm of the force. What is the significance of this concept in our everyday lif..