Electrostatics Potential & Capacitance Video Lecture | Electromagnetic Fields Theory (EMFT) - Electrical Engineering (EE)

11 videos|45 docs|73 tests

FAQs on Electrostatics Potential & Capacitance Video Lecture - Electromagnetic Fields Theory (EMFT) - Electrical Engineering (EE)

1. What is electrostatic potential?
Ans. Electrostatic potential is the amount of electric potential energy per unit charge present at a specific point in an electric field. It represents the work done in bringing a unit positive charge from infinity to that point, without any acceleration.
2. How is electrostatic potential calculated?
Ans. The electrostatic potential at a point in an electric field can be calculated by dividing the work done in moving a positive test charge from infinity to that point by the magnitude of the test charge. Mathematically, it is expressed as V = W/q, where V is the electrostatic potential, W is the work done, and q is the test charge.
3. What is capacitance?
Ans. Capacitance is the ability of a capacitor to store electric charge. It is a measure of the amount of charge that can be stored per unit voltage across the capacitor. Capacitance is defined as C = Q/V, where C is the capacitance, Q is the charge stored, and V is the voltage across the capacitor.
4. How is capacitance calculated for a parallel plate capacitor?
Ans. For a parallel plate capacitor, the capacitance can be calculated using the formula C = ε₀A/d, where C is the capacitance, ε₀ is the permittivity of free space, A is the area of the plates, and d is the distance between the plates. The larger the area and the smaller the distance between the plates, the higher the capacitance.
5. What is the relationship between capacitance and potential difference?
Ans. The relationship between capacitance and potential difference is given by the formula Q = CV, where Q is the charge stored in the capacitor, C is the capacitance, and V is the potential difference across the capacitor. This equation shows that the charge stored in a capacitor is directly proportional to the potential difference across it, with capacitance acting as the proportionality constant.
11 videos|45 docs|73 tests

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