I do have 10 questions
Question 1 2 pts Inkjet printers, the kind that most of us use, actually steer tiny drops of ink using electric fields! The drops of ink are given tiny electric charges and are propelled between metal plates 1.08 mm long, separated by a gap of 0.23 mm. If the electric field strength in the gap equals 2,248,335 V/m, what potential, V, in volts, must the printer circuits apply to the plates? Question 2 2 pts A van de Graaff generator has an aluminum sphere on top with a radius of 9.8 cm and carries a charge of -1 microcoulombs (uC). What is the potential, V, in volts, at the surface of the sphere? 1/5 Question 3 2 pts A van de Graaff generator has an aluminum sphere on top with a radius of 12.5 cm and carries a charge of -1.08 microcoulombs (uC). What is the potential, V, in volts, at a point a distance 26.4 cm above the surface of the sphere? Question 4 2 pts In a hydrogen atom, an electron with a charge of (-)1.6e-19 C orbits a proton with the same but positive charge at a distance 79.3 picometers away (that’s trillionths of a meter or 10-12 m). What is the potential in volts at the location of the electron due to the charge of the proton? Question 5 2 pts In an ordinary home electric outlet, the holes for the prongs on the plug are 12.7 mm apart. What is the magnitude of the electric field, in V/m, between the prongs when connected to 120 volts? 2/5 Question 6 2 pts Here you see three charges of identical magnitude Q, but of positive or negative signs. Rank them in order of the potential at point P, from the greatest potential to the least. Note that a large negative potential is less than zero! 1 2 3 4 [ Choose ] [ Choose ] [ Choose ] [ Choose ] 3/5 Question 7 2 pts Here is a puzzle in the worst sense, a totally contrived situation, but instructive, nonetheless. Suppose you have four identical charges of value +1.39 nC at the corners of a square with sides of length 1.1 meters. (One nanocoulomb equals 1 x 10-9 C.) Calculate the electric potential, V, in volts at the very center of the square. Question 8 2 pts Let’s milk this silly situation for all it’s worth. Again, you have four identical charges of value +1.20 nC at the corners of a square with sides of length 0.75 meter. (One nanocoulomb equals 1 x 10-9 C.) Calculate the magnitude of the electric field strength, E, in V/m at the very center of the square. Question 9 2 pts Suppose you have two conductors of different sizes and different initial charges. You connect them with a wire. What one measurement will then be equal for both of them? Their… charge. 4/5 charge density (that is charge/area). potential. surface field strength. Question 10 2 pts You have two small charges 1.00 m apart. Q1 is positive, on the left, and Q2, on the right, is negative. Their values are 2 uC and -4 uC. At what distance, in m, along the line between them from the left charge will the potential equal zero? Quiz saved at 12:04pm Submit Quiz 5/5
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