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331: In a charged hollow metal conductor, the charge is
w) On the inside surface only
x) On both the inside and outside surfaces
y) On the outside surface only
z) Only between the inside and outside surfaces
ANSWER: Y -- ON THE OUTSIDE SURFACE ONLY
332: Two negative point charges are 2 meters apart and repel each other with a force of 2 Newton’s. When the distance between the charges is doubled, the force between them is
w) one fourth as great
x) One half as great
y) Twice as great
z) four times as great
ANSWER: W -- ONE FOURTH AS GREAT
333: The rate at which electrical energy is used is measured in
w) Volts
x) Amperes
y) Joules
z) Watts
ANSWER: Z – WATTS
334: For an electromagnetic wave traveling in a vacuum, if the magnitude of the intensity of the E field is zero, the magnitude of the intensity of the B field is:
w) Zero
x) A negative maximum
y) A positive maximum
z) The square root of 2 times the positive maximum
ANSWER: W -- ZERO
335: The effective capacitance of four, 5-microfarad capacitors connected in series is:
w) 0.20 microfarad
x) 0.5 microfarad
y) 1.0 microfarad
z) 1.25 microfarad
ANSWER: Z -- 1.25 MICROFARAD
336: The terminal voltage of a cell supplying energy to a circuit is usually less than its emf because of the cells
w) Size
x) Internal resistance
y) Mass
z) Energy
ANSWER: X -- INTERNAL RESISTANCE
337: A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is:
w) 30 degrees
x) 60 degrees
y) 90 degrees
z) 180 degrees
ANSWER: Y -- 90 DEGREES
338: Light bends around sharp corners as a result of
w) Refraction
x) Reflection
y) Diffraction
z) Dispersion
ANSWER: Y -- DIFFRACTION
339: A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is
w) 6
x) 25
y) 38
z) 100
ANSWER: Z -- 100
340: In the Millikan oil-drop experiment the UPWARD force on the drop is due to the:
w) Gravitational and electric fields
x) Gravitational field and the charge on the drop
y) Electric field and the size of the drop
z) Electric field and the charge on the drop
ANSWER: Z -- ELECTRIC FIELD AND THE CHARGE ON THE DROP
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