Physics

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The conventional direction of magnetic field lines outside a magnet are from A) north to south. ... Started by kamilo84	1 Replies 61 Views	Jul 29, 2018 by af
The magnetic fields of a pair of nearby magnets can A) only add. B) cannot add or subtract. C) ... Started by dejastew	1 Replies 37 Views	Jul 29, 2018 by bassamabas
The end of a compass needle that points to the south pole of a magnet is the A) north pole. B) ... Started by awywial	3 Replies 60 Views	Jul 29, 2018 by bbburns21
Several paper clips dangle from the north pole of a magnet. The induced pole in the bottom of the ... Started by saliriagwu	1 Replies 127 Views	Jul 29, 2018 by ebonylittles
To weaken a bar magnet A) drop it on a hard surface. B) put it in hot flames. C) whack it with ... Started by storky111	1 Replies 19 Views	Jul 29, 2018 by jjorrostieta
In the atoms of most materials the fields of individual electrons A) cancel one another. B) ... Started by mia	1 Replies 29 Views	Jul 29, 2018 by diesoon
When current reverses direction in a wire, the surrounding magnetic field A) also reverses ... Started by lbcchick	3 Replies 86 Views	Jul 29, 2018 by zacnyjessica
The lift experienced by Maglev trains is due to magnetic A) attraction. B) repulsion. C) ... Started by JMatthes	1 Replies 154 Views	Jul 29, 2018 by mjenn52
When a current-carrying wire is bent into a loop, its magnetic field inside the loop A) weakens. ... Started by robinn137	1 Replies 625 Views	Jul 29, 2018 by Awesome
Which force field can increase a moving electron's speed? A) electric field B) magnetic field ... Started by karateprodigy	1 Replies 5,070 Views	Jul 29, 2018 by Carissamariew
No net force acts on a loop of wire in a magnetic field when A) no current is in the loop. B) no ... Started by justinmsk	3 Replies 801 Views	Jul 29, 2018 by mk6555
The force a magnetic field exerts on a current-carrying wire is maximum when the wire is oriented ... Started by jparksx	1 Replies 163 Views	Jul 29, 2018 by josephsuarez
An electron beam directed through a magnetic field A) may be deflected. B) may experience a ... Started by silviawilliams41	1 Replies 49 Views	Jul 29, 2018 by Shshxj
Although a magnet can change the direction of travel of an electron beam, it cannot change its A) ... Started by Mr. Wonderful	1 Replies 56 Views	Jul 29, 2018 by chevyboi1976
A galvanometer indicates A) electric charge. B) a flow of electrons. C) electric voltage. D) ... Started by Chelseaamend	3 Replies 124 Views	Jul 29, 2018 by brittrenee
If a magnet produces a force on a current-carrying wire, the wire A) produces a force on the ... Started by james0929	1 Replies 66 Views	Jul 29, 2018 by joshbk44
Cosmic rays penetrate your body when A) safely in your home. B) outdoors. C) in mountainous ... Started by frankwu	1 Replies 38 Views	Jul 29, 2018 by aburgess
Over geologic history the Earth's magnetic field A) has been relatively stable. B) has increased ... Started by james0929	1 Replies 61 Views	Jul 29, 2018 by ryansturges
Biomagnetism has been detected in A) bacteria. B) pigeons. C) wasps. D) humans. E) all of the ... Started by Beheh	3 Replies 21 Views	Jul 29, 2018 by cadimas
The induced electric and magnetic fields of Maxwell are A) parallel to each other. B) ... Started by panfilo	1 Replies 22 Views	Jul 29, 2018 by soda0602
The discovery of electromagnetic induction is credited to A) Joseph Henry in America. B) Michael ... Started by kodithompson	1 Replies 27 Views	Jul 29, 2018 by amcvicar
Electromagnetic induction is employed in A) electric power lines. B) triggering traffic lights. ... Started by newbem	1 Replies 38 Views	Jul 29, 2018 by bitingbit
When voltage is induced in a coil of wire, current is A) also induced. B) not induced. C) ... Started by jho37	3 Replies 126 Views	Jul 29, 2018 by Joc
Electromagnetic induction occurs in a coil when there is a change in A) electric field intensity ... Started by cagreen833	1 Replies 47 Views	Jul 29, 2018 by Anton
If you thrust a magnet into a closed loop of wire, the loop will A) rotate. B) have a current in ... Started by captainjonesify	1 Replies 62 Views	Jul 29, 2018 by Chou