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Standard XII
Physics
Question

An electric field of 200Vm−1 exists in the region between the plates of a parallel plate capacitor of plate separation 5cm. The potential difference between the plates when a slab of dielectric constant 4 and thickness 1cm is inserted between the plates is:
  1. 7.5V
  2. 8.5V
  3. 9.0V
  4. 10V

A
10V
B
9.0V
C
7.5V
D
8.5V
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