
Field and Wave Electromagnetics 2nd Edition by David Cheng
النسخة 2الرقم المعياري الدولي: 978-0201128192
Field and Wave Electromagnetics 2nd Edition by David Cheng
النسخة 2الرقم المعياري الدولي: 978-0201128192 تمرين 39
Refer to Problem.
a) Calculate the time it takes for the charge density in the sphere to diminish to 1% of its initial value.
b) Calculate the change in the electrostatic energy stored in the sphere as the charge density diminishes from the initial value to 1% of its value. What happens to this energy
c) Determine the electrostatic energy stored in the space outside the sphere. Does this energy change with time
Problem:
Lightning strikes a lossy dielectric sphere- = 1.2 0 , = 10 (S/m)-of radius 0.1 (m) at time t = 0, depositing uniformly in the sphere a total charge 1 (mC). Determine, for all t,
a) the electric field intensity both inside and outside the sphere,
b) the current density in the sphere.
a) Calculate the time it takes for the charge density in the sphere to diminish to 1% of its initial value.
b) Calculate the change in the electrostatic energy stored in the sphere as the charge density diminishes from the initial value to 1% of its value. What happens to this energy
c) Determine the electrostatic energy stored in the space outside the sphere. Does this energy change with time
Problem:
Lightning strikes a lossy dielectric sphere- = 1.2 0 , = 10 (S/m)-of radius 0.1 (m) at time t = 0, depositing uniformly in the sphere a total charge 1 (mC). Determine, for all t,
a) the electric field intensity both inside and outside the sphere,
b) the current density in the sphere.
التوضيح
a)
Consider the following equation.
……...
Field and Wave Electromagnetics 2nd Edition by David Cheng
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