AP Physics C Electrostatics

Three charged particles are located at the corners of an

equilateral triangle as shown. Calculate the total electric force on the 7.00-C charge.

• 0.872 N, 330º

• 0.760 N, 330º

• 0.872 N, 30º

• 0.760 N, 30º

In the given figure, determine the point (other than

infinity) at which the electric field is zero.

• 1.82 m to the left of the -2.50 μC charge

• 1.82 m to the right of the -2.50 μC charge

• 0.392 m to the left of the -2.50 μC charge

• 0.392 m to the right of the -2.50 μC charge

Tags

NGSS.HS-PS2-4

Three point charges are arranged as shown. Find the magnitude of the electric field that the 6.00-nC and -3.00-nC charges together create at the origin.

•  $2.77\times10^3\ \frac{N}{C}$  

•  $5.99\times10^3\ \frac{N}{C}$  

•  $2.70\times10^3\ \frac{N}{C}$  

•  $7.65\times10^3\ \frac{N}{C}$  

Three point charges are arranged as shown. Find the magnitude of the force on the 5.00-nC charge.

• 191 N
  

• 13.8 N
  

• 3.00 N
  

• 13.5 N
  

A proton is projected in the +x direction into a region of a uniform electric field E = (-6.00 x 105) N/C, also in the +x direction at t = 0. The proton travels 7.00 cm as it comes to rest. Determine the acceleration of the proton.

• $-5.76\times10^{13}\ \frac{m}{s^2}$

• $+5.76\times10^{13}\ \frac{m}{s^2}$

• $-5.76\times10^{12}\ \frac{m}{s^2}$

• $+5.76\times10^{12}\ \frac{m}{s^2}$

A proton is projected in the +x direction into a region of a uniform electric field E = (-6.00 x 105) N/C, also in the +x direction at t = 0. The proton travels 7.00 cm as it comes to rest. Determine the initial speed of the proton.

• $2.84\times10^6\ \frac{m}{s}$

• $8.06\times10^{14}\ \frac{m}{s}$

• $2.84\times10^7\ \frac{m}{s}$

• $8.06\times10^{12}\ \frac{m}{s}$

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A proton is projected in the +x direction into a region of a uniform electric field E = (-6.00 x 105) N/C, also in the +x direction at t = 0. The proton travels 7.00 cm as it comes to rest. Determine the the time interval over which the proton comes to rest. 

• $4.93\times10^{-8}s$

• $2.03\times10^7s$

• $4.93\times10^8s$

• $2.03\times10^{-7}s$

A uniformly charged insulating rod of length
14.0 cm is bent into the shape of a semicircle
as shown. The rod has a total charge of -7.50 C. Find the magnitude and direction of the electric field at O, the center of the semicircle.

•  $2.16\times10^7\ \frac{N}{C}$  , to the right
  

•  $2.16\times10^7\ \frac{N}{C}$  , to the left
  

•  $3.03\times10^6\ \frac{N}{C}$  , to the left
  

•  $3.03\times10^6\ \frac{N}{C}$  , to the right
  

A rod 14.0 cm long is uniformly charged and has a total

charge of -22.0 μC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center.

• $1.59\times10^6\ \frac{N}{C}$ , to the right
  

• $1.59\times10^6\ \frac{N}{C}$ , to the left
  

• $4.87\times10^6\ \frac{N}{C}$ , to the right
  

• $4.87\times10^6\ \frac{N}{C}$ , to the left