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) microscopic 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 differences 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.

Explanation / Answer

11). Time varying magnetic field is used in TMS to induce the stimulating current.

12). Household sockets are generally wired in parallel as if one appliance got damaged the complete circuit doesn't stop. Other appliances keep on working.

13). Fuses are always connected in series to avoid any damage. When current increases beyond a specific value fuse melts and circuit is break.

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