7:121 GmailA usercontent.crowdmark.com1) A small object with a 5.0-µC charge is accelerating horizontally on a friction-free surface at0.0050 m/s due only to an electric field. If the object has a mass of 2.0 g, what is the magnitudeof the electric field?A) 4.0 N/CB) 2.0 N/CC) 1.0 N/CD) 0.0020 N/CE) 0.0040 N/C2) A proton that is initially at rest is accelerated through an electric potential difference ofmagnitude 500 V. How much kinetic energy does it gain?A) 8.0 × 10-JB) 1.6 x 10"JC) 500 JD) 800 J3) A 2.0-µF capacitor and a 4.0-µF capacitor are connected in series across an 8.0-V potentialsource. What is the charge on the 2.0-µF capacitor?A) 12 µCB) 25 µCC) 4.0 µCD) 11 µCΕ) 2.0 μC4) An electron moving perpendicular to a uniform magnetic field of 3.2 x 10-T moves in a circleof radius 0.40 cm. How fast is this electron moving?A) 3.0 x 10 m/sB) 0.80 x 10 m/sC) 1.9 x 10 m/sD) 1.9 x 10 m/sE) 2.2 x 10 m/sOPEN IN...7

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1) A small object with a 5.0-µC charge is accelerating horizontally on a friction-free surface at 0.0050 m/s due only to an electric field. If the object has a mass of 2.0 g, what is the magnitude of the electric field? A) 4.0 N/C B) 2.0 N/C C) 1.0 N/C D) 0.0020 N/C E) 0.0040 N/C

1) A small object with a 5.0-µC charge is accelerating horizontally on a friction-free surface at 0.0050 m/s due only to an electric field. If the object has a mass of 2.0 g, what is the magnitude of the electric field? A) 4.0 N/C B) 2.0 N/C C) 1.0 N/C D) 0.0020 N/C E) 0.0040 N/C

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

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A usercontent.crowdmark.com
1) A small object with a 5.0-µC charge is accelerating horizontally on a friction-free surface at
0.0050 m/s due only to an electric field. If the object has a mass of 2.0 g, what is the magnitude
of the electric field?
A) 4.0 N/C
B) 2.0 N/C
C) 1.0 N/C
D) 0.0020 N/C
E) 0.0040 N/C
2) A proton that is initially at rest is accelerated through an electric potential difference of
magnitude 500 V. How much kinetic energy does it gain?
A) 8.0 × 10-J
B) 1.6 x 10"J
C) 500 J
D) 800 J
3) A 2.0-µF capacitor and a 4.0-µF capacitor are connected in series across an 8.0-V potential
source. What is the charge on the 2.0-µF capacitor?
A) 12 µC
B) 25 µC
C) 4.0 µC
D) 11 µC
Ε) 2.0 μC
4) An electron moving perpendicular to a uniform magnetic field of 3.2 x 10-T moves in a circle
of radius 0.40 cm. How fast is this electron moving?
A) 3.0 x 10 m/s
B) 0.80 x 10 m/s
C) 1.9 x 10 m/s
D) 1.9 x 10 m/s
E) 2.2 x 10 m/s
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