Multiple-Choice Homework Problem 13.8 In general, what do inductors do in circui
ID: 1462940 • Letter: M
Question
Multiple-Choice Homework Problem 13.8 In general, what do inductors do in circuits? Select One of the Following: (a) Inductors store charge. (b) Inductors oppose changes in resistance. (c) Inductors oppose changes in potential difference. (d) Inductors oppose changes in current. (e) Inductors provide energy to the circuit. Multiple-Choice Homework Problem 13.9 A time-varying current flows in a loop of wire causing a magnetic field and a time-varying magnetic flux through the surface bounded by the same loop. Would an emf be observed around the loop? Select One of the Following: (a)yes (b)no Multiple-Choice Homework Problem 13.10 The solenoid forming the secondary of Anthony?s Tesla coil has 500 turns wrapped on a tube of radus 9cm and length 80cm (I'm guessing the numbers here). If the solenoid carries a current of 1 x 10^-3 A, how much energy is stored in the solenoid?s magnetic field? Select One of the Following: (a) U = 3.6 x 10^-11J. (b) U = 5.0 x 10^-9J. (c) U = 1.9 x 10^-8J. (d) U = 3.5 10^-6J. (e) U = 1.2 x 10^-5J.Explanation / Answer
13.8 )
for the inductors , as the indcutors have the tedency to keep the current constant in the circuit
the inductors will
d) Inductors opose changes in current
13.9)
as emf induced = rate of change of flux
as the flux is changing with time ,
there will be emf induced in the loop ,
a) yes
13.10)
number of turns , N = 500
inductance , L = u0*N^2 * A/l
L = 4pi *10^-7 * 500^2 * pi * 0.09^2/0.80
L = 9.99 *10^-3 H
energy stored = 0.5 Li^2
energy stored = 0.5 * 9.99 *10^-3 * 0.001^2
energy stored = 5*10^-9 J
the energy stored is b) 5 *10^-9 J
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.