A parallel plate capacitor is attached to a voltage source providing 12 V. When an insulator of dielectric constant 6.0 is then used to fill the air space between the capacitor plates, what happens to the surface charge density on the plates if the voltage source is still attached?
A. it increases by a factor of 6.0
B. it increases by a factor of 2.0
C. it decreases by a factor of 6.0
D. it decreases by a factor of 2.0
E. it stays the same
A. it increases by a factor of 6.0
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