If 500 J of work are required to carry a charged particle between two points with a potential difference of 40V, the magnitude of the charge on the particle is:
a) 0.040 C
b) 12.5 C
c) 20C
D) cannot be computed unless the path is give
e) none of these

My solution:
I used the equation V=W/q inorder to solve for the charge. I plugged in the numbers to get 40= (500)/X. The answer I got was .08. According to the book the answer is 12.5 C

The potential difference between two points is 100V. If 2 C is transported from one of these points to the other, the magnitude of work done is:
a) 200J
b) 100 J
c) 50J
d) 100 J
e) 2 J

The solution I figured would use the same equation because involves potential difference and charge. When I calculated the answer using V=W/q I came up with the answer I came up with A 200J.

Am I handling these problems right because in the second question my answer was right but not in the first one.

Since 40 = 500/X, then X = 500/40 = 12.5 C

Your math is unique.

QV= energy
Q= 500/40 Coulombs That is not .08C

The second is correct. QV=W

  1. 👍 0
  2. 👎 0
  3. 👁 746
asked by susane
  1. In fact q= W/ V
    This is q= 500J/40V
    so, q= 12.5J/V or 12.5 Coulombs (C)

    1. 👍 0
    2. 👎 0
    posted by Magoo
  2. gvch

    1. 👍 0
    2. 👎 0
  3. ルイヴィトンコピー品第1店 販売専門店
    ★高級品☆┃時計┃バッグ┃財 布┃その他┃
    ◆★ 誠実★信用★顧客は至上
    品質がよい 価格が低い 実物写真 品質を重視
    100%品質保証 100%満足保障 信用第一

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A particle leaves the origin with an initial velocity = (2.35 m/s) and moves with constant acceleration = (-1.90 m/s2) + (2.60 m/s2)>. (a) How far does the particle move in the x direction before turning around? m (b) What is the

    asked by Kaylah on October 14, 2011
  2. Physics

    A charged particle is moving downward with an initial speed of 5 × 106m/s when it encounters a uniform magnetic field that points east to west. (a) If the initial force on the particle is to the north, is the particle positive or

    asked by Lindsey on March 21, 2013
  3. science

    A -10 nC charged particle has a velocity v=3i+4j+5k ms-1 as it enters a magnetic field B=10000Tj. Calculate the force vector on the charge. What electric field intensity is required so that the velocity of the charged particle

    asked by justina on September 16, 2011
  4. physics

    A proton is acted on by an uniform electric field of magnitude 233 N/C pointing in the positive x direction. The particle is initially at rest. (a) In what direction will the charge move? (b) Determine the work done by the

    asked by mathew on March 29, 2015
  5. Physics C

    A charged particle is released from rest in a region that has a uniform electric field of magnitude 64.0 N/C. After traveling a distance of 0.500 m in this region, the particle has a kinetic energy of 0.880 J. The charge on the

    asked by Harry on January 14, 2015
  6. Physics

    A charged particle A exerts a force of 2.39 ìN to the right on charged particle B when the particles are 13.3 mm apart. Particle B moves straight away from A to make the distance between them 16.1 mm. What vector force does

    asked by Jan on February 6, 2010
  7. physics

    Indicate true or false in each of the following statements: 1. A static magnetic field can do work on a current carrying wire when the current in the wire is perpendicular to the field. 2. The time required for a charged particle

    asked by Sandhya on April 9, 2008
  8. physics

    (a) A charged particle accelerates as it moves from location A to location B. If V A = 170 V and V B = 210 V, what is the sign of the charged particle? positive negative (b) A proton gains electric potential energy as it moves

    asked by mathew on March 29, 2015
  9. phsics

    A charged particle is moving in a uniform magnetic field. Which of the following statements concerning the magnetic force exerted on the particle is false? A) It does not change the kinetic energy of the particle. B) It can act

    asked by benton on April 2, 2007
  10. Physics

    a charged particle is in point (2, 3, 8) and has a charge Q1 = 5x10-10C. Another particle is at (5,7,0) and has a charge Q2 = 3x10-10C. Calculate how much work needed to move the first particle to the point (0, -7.2) using the

    asked by Filip on May 12, 2012

More Similar Questions