A series 
circuit is connected to AC voltage source. Consider two cases;
A
When C is without a dielectric medium and 
B
When C is filled with dielectric of constant 4. The current I R through the resistor and voltage V C across the capacitor are compared in two cases. Which of the following is true?
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
For circuit A,
Impedance, 
Current in circuit, 
… (i)
Potential difference across C,
For circuit B,
Impedance, 
Current in circuit, 
… (ii)
Potential difference across C,
Hence, from above Eqs. (i) and (ii), we conclude that as numerator of 
is increased from 
by a factor of 2.
So, 
and 
.
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