Question

3. (a) A solid conducting slab with thickness a little bit smaller than the separation between the two plates of a capacitor is introduced between them. Does the capacitance increase, decrease, or stay the same? Explain (b) A capacitor is said to carry a charge what is the net charge on the entire capacitor? 4. Capacitors. A solid conducting slab is inserted between the plates of a charged capacitor, separated at a distance d. The slab thickness is 50% of the plates spacing, with area that of the plates. (a) what happens to the capacitance (Hint the thickness of the field region is reduced with the introduced slab) (b) What happens to the stored energy is the capacitor is isolated?

Answer 1

+ A delld careleeding ableb placed in capecitor Here given - t is little smalles to ď + + 2 + to & zo Because oslab eis conducting Electric Held Intensity blw plates to = € D and Q Y + + + A Capacitom C- 9 zo in ozo Ve Eo(dot) so putting value C = GA af a, v in ① E E A E. (d-4) to (dot) (= to A det Capacitance increas is t increase.

dzt them 1 C= 00 - + + + magnitude (1) A capacitor is said to be carry charge o j.e. of charge on plater is to + But charge is opposite In nature implutes charge on capacitor = Magnitude of Cheorge on tue plate charge on capacitor I charge on t t negative platel Entire charge on capacitor is zero. but charge on capacitor will be ta.