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rijulg
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If a metal rod of 20 cm is charged with 10 μC, then what should be its cross section area so as to prevent electric discharge (electric breakdown) ?
The cross-sectional area of a rod is the measure of the surface area of the cross-section of the rod. It represents the amount of space within the cross-section that can be occupied by a two-dimensional shape.
The cross-sectional area of a rod can be calculated by multiplying the length of the rod by the width of the cross-section. For example, if the rod is a perfect cylinder, the cross-sectional area can be calculated by using the formula A = πr^2, where r is the radius of the cylinder.
The main factor that can affect the cross-sectional area of a rod is the shape of the cross-section. Other factors include the material of the rod, temperature, and external forces such as pressure or tension.
The cross-sectional area of a rod is crucial in many applications, especially in structural engineering and construction. It helps determine the strength and stability of a structure, as well as its ability to withstand external forces.
In some cases, yes, the cross-sectional area of a rod can change over time due to factors such as corrosion, erosion, or wear and tear. It is important to regularly monitor and maintain the cross-sectional area of rods to ensure their structural integrity.