Here are the 12 ideas covered by the MC questions.
(in no particular order)

 1. To deflect the downward-traveling electron beam
    towards the East, bring the S pole of a magnet
    up to the S side of the beam.

 2. Both radio and light waves are EM waves; both have
    electric and magnetic fields; both travel at the
    speed of light, and both carry "bundles of energy".
    Visible wavelengths are 10-100's of millions of
    times shorter than radio waves.

 3. The free electrons making up a current move at 
    about the speed of a slow moving snail, or slower.

 4. A transformer works because nature resists a
    CHANGING magnetic field.

 5. In the microwave coming towards you, the E field
    is up or down and the B field is right or left.

 6. An EM wave carries energy in the form of E and
    B fields.

 7. Inside of a bar magnet the B field points from
    the S end to the N end.

 8. The capacitor is charged by moving negative charges
    from one plate to the other; the plate from which
    the negative charges are taken becomes positive.

 9. If a proton and neutron combine to make a nucleus,
    the mass of that nucleus will be a little less than
    the mass of the proton plus the mass of the neutron.
    The "lost" mass-energy will appear as a gamma-ray
    photon.

10. For a current going into this page, the B field
    makes clockwise loops about the current.

11. See the figure here.  The charge nearest the 100 V
    plate has the most potential energy.  The charge in
    the middle of the 50-V potential "hill", and thus
    at a location where the potential is 25 V, has the
    least.

12. Use the same figure.  The steepest hill is the
    100-V hill over a distance of 5.0 cm, so the
    electric force is greatest for the charge on that
    hill.  The shallowest hill is the 50-V hill over
    a distance of 10.0 cm, so the electric force is 
    least for the charge on that hill.

Problem 1A:  Amount of force on an electron moving 
             perpendicularly through a B field.
 
    This is part (a) of the final question of our HW Activity 
    "Magnetic Forces".

    Use the Lorentz force law F_m=|q|vB.  The amount of
    charge is the absolute value of the charge of an
    electron.  To get the speed, you have to multiply the
    given fraction by the speed of light.  B is also given.
    The drawing should agree with Prof. Lorentz's hand
    rule for the force.
   
Problem 1B:  Amount of acceleration for the same electron.
 
    This is part (b) of the final question of our HW Activity 
    "Magnetic Forces".

    Use Newton's 2nd Law for the amounts.  The amount of
    net force is the magnetic force from Problem 2A (gravity
    can certainly be ignored for an electron).  Once you have
    solved symbolically for the amount of acceleration, you
    end up dividing the amount of net force by the mass of
    an electron.

Problem 2:  Amount of falling water needed to produce a given
            amount of energy in city electric heaters.
 
    Essentially question 6 of our HW Activity "Induction".

    Draw a picture of a dam with the generator at the bottom;
    show the water level.  Show the transmission lines from
    dam to city, and show some representation of the large
    number of heaters in the city.  Your basic strategy is to 
    use Conservation of Energy.  At the start the water is
    at the top of its intake chute, with little or no KE,
    ready to fall.  At the end the water has fallen and turned
    the generators, and has no more KE.  By the principle of
    Conservation of Energy with resistive forces present, and
    assuming that the generators and transmission lines are
    very efficient, all the "lost" mechanical energy has been
    transformed into electric energy by the turning generators,
    and then has appeared as thermal energy in the resistors
    of the city.  Find the amount of thermal energy using a
    unit argument.  Setting the PE at the start equal to this
    thermal energy allows you to solve for the mass of the
    falling water.