Answers
Suppose a parallel plate capacitor is connected across a cell. Plate of the capacitor connected with positive terminal of the cell well get positive charge stored over it and that with the negative terminal will get negative charge. Means it appears that positive charge has been shifted from positive terminal to the positively charged plate and from negative terminal to negatively charged plate. So obviously some work must have been done which will be stored in the capacitor as its electric field energy.
(a) charge is being shifted from - cell to the plates of capacitor gradually At any instant suppose charge stored over the plates is i and capacitance of capacitor is c , so potential difference acnoes the plates is v=q Nowe further infinitesinally small charge is shifted from cell to the Capacitor so small work done is . .
.
Dal = dq .V = dq ( 2 ) = q da So total work done to charge it from i to a ir W = dq = £ 1 2 3 4 This work done will get stored in The from of energy in the capacitor, - So Energy U= ac {Q²0} (b). After disconnecting it from the battery charge over the plates will remain a Constant, so uat and using C- & A : - cat hence uad] .. so on moving the plates farther away, as d increases so energy stored 'U' will also hcrease, a
Similar Solved Questions
1 answer
A 800-turn solenoid, 23 cm long, has a diameter of 2.7 cm . A 17-turn coil...
A 800-turn solenoid, 23 cm long, has a diameter of 2.7 cm . A 17-turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 6.0 A in 0.65 s , what will be the induced emf in the short coil during this time? (Express your answer to two s...
1 answer
Question Completion Status: QUESTION 18 5 p Stock Y Retums Use the following information to answer...
Question Completion Status: QUESTION 18 5 p Stock Y Retums Use the following information to answer the next three questions Month Stock X Returns 1/1/2013 -0.25 1/1/2012 0.3 1/1/2011 0.4 -0.15 0.65 Find the covariance between stocks X&Y. Round intermediate steps and your final answer to four dec...
1 answer
6) Assuming complete dissociation of the solute, how many grams of KNO3 must be added to...
6) Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at -14.5 °C? The freezing point for pure water is 0.0°C and Kf is equal to 1.86 °C/m....
1 answer
The National Assessment of Educational Progress says that a score of 275 or higher on its...
The National Assessment of Educational Progress says that a score of 275 or higher on its quantitative test reflects the skill needed to balance a checkbook. The NAEP random sample of 840 young men had a mean score of x = 272, a bit below the checkbook-balancing level. Is this sample result good evi...
1 answer
3. (10 points) Let N be the number of times we will toss a fair die,...
3. (10 points) Let N be the number of times we will toss a fair die, where N e Z+ and P(N = k) = 1/2k for any k € Z+. Let S be the sum of all the throws of the die. For example, say N turned out to be 5, then we toss the die 5 times. Say the outcomes are 6,1,1,3,4,5, then S = 6+1+1+3+4=15. Calc...
1 answer
The official settlements balance or balance of payments is the sum of A. the current account...
The official settlements balance or balance of payments is the sum of A. the current account balance and the interest in all investments. B. the current account balance and the capital account balance, less the non-reserve portion of the financial account balance. C. the current accoun...
1 answer
12. If the propagation delay through a full-adder (FA) is 3 ns (109 seconds), what is...
12. If the propagation delay through a full-adder (FA) is 3 ns (109 seconds), what is the total propagation delay in ns of a 16-bit ripple-carry adder? (7 points)?...
1 answer
Problem 1 (splitting string - 15 points): Write a C function that splits a string line...
Problem 1 (splitting string - 15 points): Write a C function that splits a string line separated by commas and stores the values in an array of strings fields. The number of commas is unknown and your function must be able to handle any number of commas in the string. Use the following built- in fun...
1 answer
The measured voltage of a cell in which the following reaction occurs is .96V. Calculate the...
The measured voltage of a cell in which the following reaction occurs is .96V. Calculate the pH of the H+ (aq) solution The measured voltage of a cell in which the following reaction occurs is 0.96 V H20g, l 0 atm) t Ag (aq, 1.0 M) 2H'(aq, pH 2Ag(s) Calculate the pl l of the H'(aq) solu...
1 answer
Solve both parts a and b please A centrifugal pump having a head capacity relationship given...
solve both parts a and b please A centrifugal pump having a head capacity relationship given by the equation; h = 160 - 9.58x10^Q? with hain feet when Q is in gpm, is to be used with a system similar to that shown in Figure 12.14. The fluid is water. Assume the pipe diameter to be 5-in, the total...
1 answer
6.50 m A closed, rigid tank contains 5 kg of air initially at 300 K, 1...
6.50 m A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. As illustrated in Fig. P6.50, the tank is in contact with a thermal reservoir at 600 K and heat transfer occurs at the boundary where the temperature is 600 K. A stirring rod transfers 600 kJ of energy to the air. The final ...
1 answer
If the mass of the body on earth is 10kg then its mass on the surface of the moon will be?
If the mass of the body on earth is 10kg then its mass on the surface of the moon will be?...