A piece of unmagnetized iron at room temperature consists of a) iron atoms with

Question

A piece of unmagnetized iron at room temperature consists of a) iron atoms with randomly oriented magnetic moments b) microscope domains each of which has a magnetic moment In electroconvulsive therapy an electric current is passed through the brain of a severely depressed patient and, surprisingly, the patient often feels better. Somewhat similar results are obtained with the technique of Trans- Cranial Magnetic Stimulation (TCM) in which the applied potential difference is replaced by (a) a constant magnetic field (b) a time-varying magnetic field (c) a constant electric field c) a time-varying electric field. Household sockets are generally wired in parallel. T/F. In most electric distribution systems the circuit is protected from overload by fuses or circuit breakers in series/parallel with the various electrical devices. A 2 mu F, 3 mu F and a 6 mu F capacitor are placed in parallel, across the terminals of a 6.0 volt power source. Starting with uncharged capacitors, how many Coulombs will flow through the battery to fully charge the capacitors ? In the above mentioned circuit suppose the 2 mu F capacitor has a 2 ohm resistor in series with it. the 3 mu F capacitor has a 3 ohm resistor in series with it, and the 6 mu F capacitor has a 6 ohm resistor in series with it. which capacitor will charge fastest Now Answer 5 of the following 7 questions. Show the basic equations you are using if pertinent Rubric 11 points each Physically relevant equation 5 points Units not given -5 points Minor arithmetic error -2 points Absurd answer or unjustified answer; -11 A ring of area 1.00 cm^2 is placed between the poles of an electromagnet. How fast does the magnetic field need to be changing to induce a current of 0.200 mA?

Explanation / Answer

10)   microscopic domains each of which has magneic moment .

11)    time varying magnetic field .

12)    True

13)    series

14)    charge flowing to fully charge capacitors = 11 * 10-6 * 6

                                                                    =    6.6 * 10-5 C

15)   The 2 microF capacitor with 2 ohm resistor in series will charge fastest . Due to its lowest time constant .

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