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1.An electron (charge -1.6×10-19C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0N/C.How much work is done on the electron as it moves 15 cm?
\x05a.4.8×10-20 J\x05b.-4.8×10-20 J\x05c.1.6×10-20 J\x05d.zero
2.A proton (+1.6×10-19C) moves 10cm along the direction of an electric field of strength 3.0N/C.The electrical potential difference between the proton’s initial and ending points is:
\x05a.4.8×10-19V\x05b.0.30V\x05\x05c.0.033V\x05d.30V
3.A 9.0-V battery is connected between two parallel metal plates 4.0mm apart.What is the magnitude of the electric field between the plates?
\x05a.2.3×103N/C\x05b.9.0N/C\x05c.2.3N/C\x05d.0.75×10-6N/C
4.A free electron is in an electric field.With respect to the field,it experiences a force acting:
\x05a.parallel.\x05\x05\x05b.anti?parallel(opposite in direction).
\x05c.perpendicular.\x05\x05\x05d.along a constant potential line.
5.A uniform electric field,with a magnitude of 600N/C,is directed parallel to the positive x-axis.If the potential at x=3.0m is 1000V,what is the potential at x=1.0m?
\x05a.400V\x05\x05b.1,600V\x05c.2,200V\x05d.2,500V
6.A uniform electric field,with a magnitude of 600N/C,is directed parallel to the positive x-axis.If the potential at x=3.0m is 1000V,what is the change in potential energy of a proton as it moves from x=3.0m to x=1.0m?(qp=1.6×10-19C)
\x05a.8.0×10-17J\x05b.1.9×10-16J\x05c.0.80×10-21J\x05d.500J
7.An electron in a cathode ray tube is accelerated through a potential difference of 5.0kV.What kinetic energy does the electron gain in the process?(e =1.6×10-19C)
\x05a.1.6×10-16J\x05b.8.0×10-16J\x05c.1.6×10-22J\x05d.8.0×1022J
8.If the distance between two isolated parallel plates that are oppositely charged is doubled,the electric field between the plates is essentially unchanged.However,the:
\x05a.potential difference between the plates will double.
\x05b.charge on each plate will double.
\x05c.force on a charged particle halfway between the plates will get twice as small.
\x05d.force on a charged particle halfway between the plates will get four times as small.
9.An electron is released from rest at the negative plate of a parallel-plate capacitor.If the distance across the plate is 5.0mm and the potential difference across the plate is 5.0V,with what velocity does the electron hit the positive plate?(me=9.1×10-31kg,e =1.6×10-19C)
\x05a.2.6×105m/s\x05b.5.3×106m/s\x05c.1.0×106m/s\x05d.1.3×106m/s
10.An electron with velocity v=1.0×106m/s is sent between the plates of a capacitor where the electric field is E=500V/m.If the distance the electron travels through the field is 1.0cm,how far is it deviated(Y) in its path when it emerges from the electric field?(me=9.1×10-31kg,e=1.6×10-19C)
\x05a.2.2mm\x05b.4.4mm\x05c.2.2cm\x05\x05d.4.4cm
1.An electron (charge -1.6×10-19C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0N/C.How much work is done on the electron as it moves 15 cm?
\x05a.4.8×10-20 J\x05b.-4.8×10-20 J\x05c.1.6×10-20 J\x05d.zero
2.A proton (+1.6×10-19C) moves 10cm along the direction of an electric field of strength 3.0N/C.The electrical potential difference between the proton’s initial and ending points is:
\x05a.4.8×10-19V\x05b.0.30V\x05\x05c.0.033V\x05d.30V
3.A 9.0-V battery is connected between two parallel metal plates 4.0mm apart.What is the magnitude of the electric field between the plates?
\x05a.2.3×103N/C\x05b.9.0N/C\x05c.2.3N/C\x05d.0.75×10-6N/C
4.A free electron is in an electric field.With respect to the field,it experiences a force acting:
\x05a.parallel.\x05\x05\x05b.anti?parallel(opposite in direction).
\x05c.perpendicular.\x05\x05\x05d.along a constant potential line.
5.A uniform electric field,with a magnitude of 600N/C,is directed parallel to the positive x-axis.If the potential at x=3.0m is 1000V,what is the potential at x=1.0m?
\x05a.400V\x05\x05b.1,600V\x05c.2,200V\x05d.2,500V
6.A uniform electric field,with a magnitude of 600N/C,is directed parallel to the positive x-axis.If the potential at x=3.0m is 1000V,what is the change in potential energy of a proton as it moves from x=3.0m to x=1.0m?(qp=1.6×10-19C)
\x05a.8.0×10-17J\x05b.1.9×10-16J\x05c.0.80×10-21J\x05d.500J
7.An electron in a cathode ray tube is accelerated through a potential difference of 5.0kV.What kinetic energy does the electron gain in the process?(e =1.6×10-19C)
\x05a.1.6×10-16J\x05b.8.0×10-16J\x05c.1.6×10-22J\x05d.8.0×1022J
8.If the distance between two isolated parallel plates that are oppositely charged is doubled,the electric field between the plates is essentially unchanged.However,the:
\x05a.potential difference between the plates will double.
\x05b.charge on each plate will double.
\x05c.force on a charged particle halfway between the plates will get twice as small.
\x05d.force on a charged particle halfway between the plates will get four times as small.
9.An electron is released from rest at the negative plate of a parallel-plate capacitor.If the distance across the plate is 5.0mm and the potential difference across the plate is 5.0V,with what velocity does the electron hit the positive plate?(me=9.1×10-31kg,e =1.6×10-19C)
\x05a.2.6×105m/s\x05b.5.3×106m/s\x05c.1.0×106m/s\x05d.1.3×106m/s
10.An electron with velocity v=1.0×106m/s is sent between the plates of a capacitor where the electric field is E=500V/m.If the distance the electron travels through the field is 1.0cm,how far is it deviated(Y) in its path when it emerges from the electric field?(me=9.1×10-31kg,e=1.6×10-19C)
\x05a.2.2mm\x05b.4.4mm\x05c.2.2cm\x05\x05d.4.4cm
1.a 2.b 3.b 4.d 5.a 6.b 7.a 8.b 9.d 10.d
这种题 太累了 有些题不确定哦大多是对的啦
这种题 太累了 有些题不确定哦大多是对的啦