Physics

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Disregarding the effects of friction, a cyclist will coast farther when a lamp powered by a wheel ... Started by kamilo84	1 Replies 27 Views	Jul 29, 2018 by tandmlomax84
When a magnet is moved to and fro in a wire coil, voltage is induced. If the coil has twice as many ... Started by pragya sharda	3 Replies 84 Views	Jul 29, 2018 by AISCAMPING
Faraday's law underlies the operation of A) an electric guitar. B) a shake flashlight. C) the ... Started by xroflmao	1 Replies 27 Views	Jul 29, 2018 by jxjsniuniu
A turbogenerator produces A) energy. B) power. C) neither, but transforms energy from one form ... Started by jlmhmf	1 Replies 51 Views	Jul 29, 2018 by xiazhe
An electric motor is very similar to A) an electric generator. B) an automobile battery. C) a ... Started by sabina	1 Replies 85 Views	Jul 29, 2018 by Kaytorgator
A generator armature is more difficult to rotate when supplying electric current due to A) an ... Started by evelyn o bentley	3 Replies 62 Views	Jul 29, 2018 by flexer1n1
A principle difference between an MHD generator and a conventional generator is that the MHD ... Started by biggirl4568	1 Replies 78 Views	Jul 29, 2018 by Edwyer
Compared to the primary voltage, the secondary voltage can be A) higher. B) lower. C) the same. ... Started by serike	1 Replies 57 Views	Jul 29, 2018 by nanny
Transformers use ac to satisfy the required A) transfer of energy from coil to coil. B) voltage ... Started by nevelica	1 Replies 23 Views	Jul 29, 2018 by fatboyy09
An efficient step-up transformer boosts A) energy. B) power. C) voltage. D) all of the above ... Started by ap345	3 Replies 60 Views	Jul 29, 2018 by amcvicar
Power is transmitted at high voltages because the corresponding current in the wires is A) also ... Started by B	1 Replies 74 Views	Jul 29, 2018 by nickk12214
The primary of a transformer is the coil connected to A) the load. B) the Internet. C) the ... Started by AEWBW	1 Replies 29 Views	Jul 29, 2018 by shoemake
The secondary of a transformer is the coil connected to A) the load. B) the Internet. C) the ... Started by jrubin	1 Replies 31 Views	Jul 29, 2018 by recede
The primary of a transformer A) has an iron core. B) may or may not have an iron core. C) has ... Started by stevenposner	3 Replies 74 Views	Jul 29, 2018 by angrybirds13579
A step-up transformer steps up voltage by ten times. If voltage input is 120 volts, voltage output ... Started by BRWH	1 Replies 110 Views	Jul 29, 2018 by gasdhashg
If the primary of a transformer is connected to a dc power source, the transformer would have a ... Started by cookcarl	1 Replies 60 Views	Jul 29, 2018 by lkoler
Disconnect a small-voltage battery from a coil of many loops of wire and a large voltage may be ... Started by scienceeasy	1 Replies 134 Views	Jul 29, 2018 by Animal_Goddess
The transmission of power from one place to another is evident in A) household electricity. B) ... Started by faduma	3 Replies 96 Views	Jul 29, 2018 by Kedrick2014
The cones in the retina of the eye are A) most densely packed at the center of vision. B) ... Started by crobinson2013	1 Replies 35 Views	Jul 29, 2018 by bassamabas
A new Moon appears in the sky just before the time of a A) solar eclipse. B) lunar eclipse. C) ... Started by ghost!	1 Replies 54 Views	Jul 29, 2018 by succesfull
Most of the waves in the electromagnetic spectrum are A) red light. B) blue light. C) green ... Started by laurencescou	1 Replies 69 Views	Jul 29, 2018 by katara
The high voltage that is important in a power line is high voltage A) between the parallel wires ... Started by Yi-Chen	3 Replies 88 Views	Jul 29, 2018 by Sarahjh
When voltage is stepped up in a transformer, current is stepped down. But Ohm's law tells us that ... Started by pepyto	1 Replies 181 Views	Jul 29, 2018 by lkoler
A force field is induced in any region of space in which A) an electric field changes with time. ... Started by newbem	1 Replies 69 Views	Jul 29, 2018 by cascooper22
In the field induction credited to Maxwell, wires A) can be insulated or non-insulated. B) are ... Started by Caiter2013	1 Replies 76 Views	Jul 29, 2018 by macagnavarro