1. Write the answer for the following questions. a) Define Potential Gradient
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Q: determine the potential at point A
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- 4. In what form is the energy of a capacitor stored?Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?11. The problem is all about Capacitors and Inductors. Please provide FREE BODY DIAGRAM in the Solution.
- present a derivation for the expressions of the energy stored in a capacitor and inductorA 220 microfarad capacitor has an initial charged of 800 microcoulomb. It is discharged through a 100-Ω resistor. How long will it take in order for a capacitor to discharge to 100 microcoulomb? 150 microcoulomb? 200 microcoulomb? Make a graphical representation of equivalent charge vs time t, then interpret the graph1. Inquire about the operational and geometric definitions of capacitance C. [C = = ε0 , please refer to previous lesson on capacitance.] 2. Have the students write down the meaning of each of the symbols present in the above definitions.
- 2. A parallel plate capacitor with a plate area of 0.13 square meters separated by 1 mm is charged to 9 Volts by a battery, which is then disconnected. The plate separation is then increased to 40 mm.A. Using the expression for the capacitance of a parallel plate capacitor, what do you expect the new potential difference across the plates to be after the increase?B. Suppose you measure the potential difference across the plates after the separation and find it to be 30 V (this should be very different from what you found in part A). This unexpected result can be explained by the effects of “stray capacitance” with nearby objects. Assuming that the stray capacitance can be modeled as a capacitor connected in parallel with the parallel plate capacitor, find the value of this stray capacitance.a) Define Potential Gradient? b) Write any four name of the practical types of capacitor? c) How do you discharge the capacitor?4. Why do we examine the behavior of an inductor when the current through it is changing? 5. What is the definition of the time constant? The definition of the time constant is I
- A capacitor of capacity C is discharged through a resistance of value R. If the charge of this capacitor takes a time T to fall to half of its initial value. How long does it take for the energy stored in the capacitor to fall to half its initial value?The capacitor is discharged through a resistor with the resistance R = 10000 Ohm with a relaxation time of 10 ms. What is the capacitance of the capacitor? What is the charge of the capacitor after time 25 ms after the beginning of discharging if the initial charge was 20 nC?Given an initially charged capacitance that begins to discharge through a resistance at t=0, what percentage of the initial voltage remains at two time constants? What percentage of the initial stored energy remains?