A series R-C circuit is connected to an alternating voltage source. Consider two situations:
a. When capacitor is air filled.
b. When capacitor is mica filled.
Current through resistor is $\mathrm{i}$ and voltage across capacitor is $\mathrm{V}$ then:

• Correct answer
  A

  ${\mathrm{V}}_{\mathrm{a}}>{\mathrm{V}}_{\mathrm{b}}$
• B

  ${\mathrm{i}}_{\mathrm{a}}>{\mathrm{i}}_{\mathrm{b}}$
• C

  ${\mathrm{V}}_{\mathrm{a}}={\mathrm{V}}_{\mathrm{b}}$
• D

  ${\mathrm{V}}_{\mathrm{a}}<{\mathrm{V}}_{\mathrm{b}}$

Hence, the correct answer is option: 'A'.