Capacitance | MCQs

Explanation

• If the area of the parallel plate capacitor is doubled, the capacitance will also double.
• The capacitance of a parallel plate capacitor is directly proportional to the area of the plates: C = ε × (A/d)
  

Explanation

The presence of a dielectric material between the plates of a capacitor increases the capacitance of the capacitor.

The dielectric material reduces the electric field between the plates, allowing more charge to be stored on the plates, and thus increasing the capacitance.

Explanation

When capacitors are connected in parallel, the total capacitance (Ct) increases, as the effective plate area and charge storage capacity increase.

The formula for total capacitance in parallel is: Ct = C1 + C2 + ... + Cn

In series connection, the total capacitance decreases, as the effective plate area and charge storage capacity decrease.

The formula for total capacitance in series is: 1/Ct = 1/C1 + 1/C2 + ... + 1/Cn

Explanation

If two or more capacitors are connected in parallel, the overall effect is that of a single equivalent capacitor having the sum total of the plate areas of the individual capacitors.

As we've just seen, an increase in plate area, with all other factors unchanged, results in increased capacitanc

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RY 23-12-2022