PHYS 1260 UPDATED EXAM SCRIPT QUESTIONS AND
ANSWERS GRADED A+
✔✔back emf opposes a change in - ✔✔current
✔✔when a change occurs in the magnetic field in a closed loop of wire - ✔✔-voltage is
induced in the wire
- current in created in the loop of wire
- electromagnetic induction occurs
✔✔electrical current passing through an inductor is converted into - ✔✔magnetic energy
✔✔electromagnetic induction occurs in a coil when there is a change in - ✔✔magnetic
field intensity in the coil
✔✔a point charge propagating with velocity through a magnetic field will experience.... -
✔✔force
✔✔force is always perpendicular to the - ✔✔- velocity
- magnetic field
✔✔the direction of force exerted on a moving charge in a magnetic field is - ✔✔at right
angles of the direction of motion
✔✔the force on an electron moving in a magnetic field will be least when its direction is
- ✔✔the same as the magnetic field direction
✔✔magnetic force takes the role of _______ - ✔✔centripetal force
✔✔the magnetic force does______________ work - ✔✔no (cannot speed it up or slow
it down)
✔✔As velocity decreases, - ✔✔the radius of the magnetic field will also decrease
✔✔a beam of singly charged ions entering a magnetic field are swept into circular
paths. the wider paths are those of _______ - ✔✔heavier ions
✔✔E-field lines ______ be broken - ✔✔CAN
✔✔B-fields are always strongest.... - ✔✔closest to the wire
✔✔reversing the direction of current in a conducting wire will also reverse the direction
of the.... - ✔✔magnetic field
ANSWERS GRADED A+
✔✔back emf opposes a change in - ✔✔current
✔✔when a change occurs in the magnetic field in a closed loop of wire - ✔✔-voltage is
induced in the wire
- current in created in the loop of wire
- electromagnetic induction occurs
✔✔electrical current passing through an inductor is converted into - ✔✔magnetic energy
✔✔electromagnetic induction occurs in a coil when there is a change in - ✔✔magnetic
field intensity in the coil
✔✔a point charge propagating with velocity through a magnetic field will experience.... -
✔✔force
✔✔force is always perpendicular to the - ✔✔- velocity
- magnetic field
✔✔the direction of force exerted on a moving charge in a magnetic field is - ✔✔at right
angles of the direction of motion
✔✔the force on an electron moving in a magnetic field will be least when its direction is
- ✔✔the same as the magnetic field direction
✔✔magnetic force takes the role of _______ - ✔✔centripetal force
✔✔the magnetic force does______________ work - ✔✔no (cannot speed it up or slow
it down)
✔✔As velocity decreases, - ✔✔the radius of the magnetic field will also decrease
✔✔a beam of singly charged ions entering a magnetic field are swept into circular
paths. the wider paths are those of _______ - ✔✔heavier ions
✔✔E-field lines ______ be broken - ✔✔CAN
✔✔B-fields are always strongest.... - ✔✔closest to the wire
✔✔reversing the direction of current in a conducting wire will also reverse the direction
of the.... - ✔✔magnetic field
