SSC Physics Note Chapter 11: Current Electricity. We rely on electricity in different areas of our daily lives. Most of the modern instruments and equipment are run by electricity. We have come to depend so much on electricity that it is difficult to imagine what would be life without electricity. In the previous chapter, we have discussed static electricity. In this chapter different quantities related to current electricity e.g. electric current, resistance, electromotive force, and the potential difference will be described. In addition, the direction of electricity, conductor, insulator and semiconductor, electric circuit, Ohm’s law, fixed and variable resistance, the dependence of resistance, series and parallel combination of resistance, electric power, system loss of electricity and load shedding, safe and effective use of electricity will be discussed.
The physics is one of the oldest academic disciplines, perhaps the oldest through the inclusion of astronomy. In the last two millennia, physics was a part of natural philosophy, chemistry, certain branches of mathematics and biology, but during the scientific revolution in the 17th century, the natural sciences emerged as unique in its own right research programs. Physics intersects with many interdisciplinary areas of research, such as Biophysics and quantum chemistry, and physics limits are not rigidly defined. New ideas in physics often explain the fundamentals of other sciences mechanisms, to open new avenues of research in areas such as mathematics and philosophy.
Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy.
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