What phenomenon did Michael Faraday discover? magnetic induction true magnetic resonance false magnetic levitation false magnetic reluctance false Single What quantity does a galvanometer directly measure? electric potential false magnetic field false current true resistance false Single Which of the following is a formula for magnetic flux? φ = |B|+|A| false φ = |B|/|A| false φ = |B||A| true φ = ∫|B||A|dl false Single What does it mean when electrostatic fields are described as "conservative"? It tends to be expended at the lowest possible amount false It is neither destroyed nor created, only transformed false Its work only depends on where it begins and ends true Its work depends on the path taken by the charge false Single Which of the following statements best reflect Lenz's law? Induced EMF is considered conservative false Magnetic flux increases in response to an induced EMF false The induced EMF always flows opposite that of the original flux true Constant magnetic fields produce constant current false Single Which of the following formulas show Lenz's law? φ = |B||A| false φ = -|B||A| false ε = ∫ E·dl false ε = -N∆l/∆t true Single He independently discovered the same phenomenon that Michael Faraday also discovered. James Clerk Maxwell false Joseph Henry true Nikola Tesla false Werner von Siemens false Single Which of the following methods will induce current in a conducting solenoid exposed to a magnetic field? Keeping the solenoid perpendicular to the magnetic field false Keeping the solenoid parallel to the magnetic field false Keeping the symmetry of the solenoid constant true Changing the intensity of the magnetic field false Single The basic operating principle of an electric generator is that: It turns mechanical or chemical energy into electrical energy true It converts magnetic energy into electrical energy false It turns mechanical or chemical energy into magnetic energy false It converts electrical energy into magnetic energy false Single When you drop a bar magnet inside a copper pipe: It will decelerate inside the pipe true It will accelerate inside the pipe false Its drop velocity won't change false It removes the pipe's magnetism false Single