Class 12 Exam > Class 12 Videos > Numericals : Equivalent Capacitance - Capacitor & Capacitance, Physics, Class 12
Numericals : Equivalent Capacitance - Capacitor & Capacitance, Physics, Class 12 Video Lecture
FAQs on Numericals : Equivalent Capacitance - Capacitor & Capacitance, Physics, Class 12 Video Lecture
| 1. What is the concept of equivalent capacitance? |  |
Ans. Equivalent capacitance is a concept in physics that refers to the effective capacitance of a combination of capacitors connected in various ways. It is the single capacitance value that can replace a group of capacitors connected in parallel, series, or any combination, without changing the overall behavior of the circuit.
| 2. How can we calculate the equivalent capacitance for capacitors connected in series? | |
Ans. To calculate the equivalent capacitance for capacitors connected in series, we use the formula:
1/Ceq = 1/C1 + 1/C2 + 1/C3 + ...
Where Ceq is the equivalent capacitance and C1, C2, C3, etc. are the individual capacitances of the capacitors connected in series. Simply add the reciprocals of the individual capacitances and take the reciprocal of the sum to obtain the equivalent capacitance.
| 3. What is the formula to calculate the equivalent capacitance for capacitors connected in parallel? | |
Ans. The formula to calculate the equivalent capacitance for capacitors connected in parallel is:
Ceq = C1 + C2 + C3 + ...
Where Ceq is the equivalent capacitance and C1, C2, C3, etc. are the individual capacitances of the capacitors connected in parallel. Simply add the individual capacitances to obtain the equivalent capacitance.
| 4. Can the equivalent capacitance of capacitors connected in series be greater than the capacitance of any individual capacitor? | |
Ans. No, the equivalent capacitance of capacitors connected in series is always less than the capacitance of any individual capacitor in the series. This is because the effective capacitance decreases as capacitors are connected in series, as the total charge stored is divided among the capacitors.
| 5. What happens to the equivalent capacitance when capacitors are connected in parallel? | |
Ans. When capacitors are connected in parallel, the equivalent capacitance increases compared to the capacitance of any individual capacitor. This is because the total charge stored is divided among the capacitors, resulting in a higher overall capacitance.
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