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Docu*entation of any economy – being advantageous, is being recommended by various governing agencies and business organizations in the best interest of economic development of the country.You are required to list down any four advantages of docu*entation of the “Differentiate between Drift & Difffusion current in semiconductor. Elaborate your answer with the help of daily life example” The difference between drift current and diffusion current is that drift current depends on the electric field applied: if there’s no electric field, there’s no drift current. Diffusion current occurs even though there isn’t an electric field applied to the semiconductor. It does not have E as one of its parameters. The constants it does depend on are Dp and Dn, and +q and -q, for holes and electrons respectively. data copied from vu solutions dot com The first constants are called the diffusion coefficients, a proportionality factor. We don’t worry too much about these because they are constants. We do worry about the gradient of the we only worry about the gradient (or derivative) with respect to the x-plane. The other difference between drift current and diffusion current, is that the direction of the diffusion current depends on the change in the carrier concentrations, not the concentrations themselves. In the equation, the signs are reversed as we are used to seeing them. We usually as*ign a +q to holes and -q to electrons. In the case of diffusion current, they are reversed to be opposite of the derivative of the concentrations. This occurs because the carriers are diffusing from areas of high concentrations to areas of low concentrations. For example, if the derivative of p with respect to x is positive, then the concentration of holes is growing as you move towards the +x direction. Diffusion current will be the opposite of that, the holes will be diffusing in the -x direction to where there’s a lower concentration of holes. If the derivative is negative, the opposite will occur. The concentration of holes is decreasing as you go from