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# how to solve this numerical ?

Asked by 16th March 2009, 6:58 PM
Answered by Expert
Answer:

Recall that V = Ed

For the capacitor with plates whose separation is increased by 2mm, the potential difference can be written as

V = E0d + (E0/K)x   -----(1)

Here d = 4mm the original distance between the plates. x = 2mm the further increase in distance.

E0 = V/d , in the question both V and d are given so find E0

Use this value in eq.1 with V = 100V and putting in all other values find K

Answered by Expert 21st March 2009, 9:18 AM
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