Concept explainers
How long does it take for charge density to drop to 1% of its initial value in polystyrene?
The time taken by polystyrene for its charge density to drop to
Answer to Problem 4.1P
The time taken by polystyrene for its charge density to drop to
Explanation of Solution
Given:
The permittivity of polystyrene is
Concept used:
The point form of current continuity equation can be written as,
Here,
Calculation:
The
Substitute
Simplify the above equation.
Convert the time in seconds to days.
Therefore, the time required is
Conclusion:
Thus, the time taken by polystyrene for its charge density to drop to
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Chapter 4 Solutions
Fundamentals of Electromagnetics with Engineering Applications