1) Unlike charges will... a) Repel b) Attract c) Fishes d) Magnets 2) Between two N poles there will be a place where the two magnets cancel out this is called a) The positive point b) The point of no magnetism c) The neutral point d) A Dipole 3) A spring like coil is called a a) coils b) solenoid c) twisty d) spring 4) The force a wire will experience in a magnetic field can be expressed by a) F=IL b) F=LIL c) F=BIL d) F=BIN 5) A Tesla is a derived unit from a) NAm b) Nm/A c) mA/N d) N/Am 6) An electron in an electron beam has the kinetic energy equal to a) eV b) 0.5*m*v c) V*I d) R/V 7) "The induced emf in a circuit is equal in size to the rate of change of magnetic flux linkage through the circuit" This is what law? a) Lenz's Law b) Conservation of energy c) Faraday's Law d) Murphey's Law 8) Wb/s is the same as a... a) Volt b) Amp c) Watt d) Coulomb 9) A transformer is made up of a primary coil and a ___________ coil a) secondary b) tertiary c) 2nd primary d) Multiple coils 10) With transformers the conservation of energy tells us that you cannot a) Get less power than you put in b) Get more power than you put in c) Get more energy than you put in d) Get the transformer to malfunction

Magnetic field revision

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