Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 8 views

    Sheet 01-Ch23

    Uploaded by

    fadydesoky45
    The document contains 12 multiple choice questions about electrostatic forces and Coulomb's Law. The questions cover topics such as calculating the electrostatic force between two point charges, determining the distance between two charges given the force, and analyzing how changes in distance or charge would affect the electrostatic force.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Sheet 01-Ch23

    Uploaded by

    fadydesoky45
    8 views2 pages
    The document contains 12 multiple choice questions about electrostatic forces and Coulomb's Law. The questions cover topics such as calculating the electrostatic force between two point charges, determining the distance between two charges given the force, and analyzing how changes in distance or charge would affect the electrostatic force.

    Original Description:

    Sheet01 ch23 physics

    Copyright

    © © All Rights Reserved

    Available Formats

    PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    The document contains 12 multiple choice questions about electrostatic forces and Coulomb's Law. The questions cover topics such as calculating the electrostatic force between two point charges, determining the distance between two charges given the force, and analyzing how changes in distance or charge would affect the electrostatic force.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    8 views2 pages

    Sheet 01-Ch23

    Uploaded by

    fadydesoky45
    The document contains 12 multiple choice questions about electrostatic forces and Coulomb's Law. The questions cover topics such as calculating the electrostatic force between two point charges, determining the distance between two charges given the force, and analyzing how changes in distance or charge would affect the electrostatic force.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Sadat Academy for Management Sciences ‫أكاديمية السادات للعلوم اإلدارية‬

    Computers and Information Faculty ‫كلية الحاسبات والمعلوما ت‬

    Q1 An ion has a charge of 6.4 x 10-17 C. 8.2 x 10-4 meters away is a second charge with
    a charge of 9.6 x 10-16 C.
    a. What is the strength of the electrostatic force between the ions?
    b. Is the force attractive or repulsive?
    Q2 The force between two protons is 5.5 x 10-15 N. How far apart are the protons?
    Q3 Two protons in an atomic nucleus are typically separated by a distance of 2 × 10-15
    m. The electric repulsive force between the protons is huge, but the attractive
    nuclear force is even stronger and keeps the nucleus from bursting apart. What is
    the magnitude of the electric force between two protons separated by 2.00 × 10-15 m?
    Ans: 57.5 N
    Q4 A 7.50-nC point charge is located 1.80 m from a 4.20-nC point charge.
    (a) Find the magnitude of the electric force that one particle exerts on the other.
    (b) Is the force attractive or repulsive?
    Ans: 8.74 × 10 N
    −8

    Q5 Two identical conducting small spheres are placed with their centers 0.300 m apart.
    One is given a charge of 12.0 nC and the other a charge of 218.0 nC.
    (a) Find the electric force exerted by one sphere on the other.
    (b) What If? The spheres are connected by a conducting wire. Find the electric force
    each exerts on the other after they have come to equilibrium.
    Sadat Academy for Management Sciences ‫أكاديمية السادات للعلوم اإلدارية‬
    Computers and Information Faculty ‫كلية الحاسبات والمعلوما ت‬

    Q6 What are the magnitude and direction of the electric field that will balance the
    weight of (a) an electron and (b) a proton?
    Q7 Three point charges lie along a straight line as shown in Figure, where q1 = 6.00 µC,
    q2 = 1.50 µC, and q3 = 22.00 µC. The separation distances are d1 = 3.00 cm and d2
    = 2.00 cm.
    Calculate the magnitude and direction of the net electric force on
    (a) q1, (b) q2, and (c) q3.

    Q8 Two small beads having positive charges q1 = 3q and q2 = q are fixed at the opposite
    ends of a horizontal insulating rod of length d = 1.50 m. The bead with charge q1 is
    at the origin. As shown in Figure, a third small, charged bead is free to slide on the
    rod.
    (a) At what position x is the third bead in equilibrium?
    (b) Can the equilibrium be stable?

    Ans: a. 0.951 m , b=……


    Q9 Three point charges lie along a circle of radius r at angles
    of 30°, 150°, and 270° as shown in Figure.
    Find a symbolic expression for the resultant electric field
    at the center of the circle.
    Ans: −ke 3q/r2 in +ve y direction

    Q10 Three point charges are located on a circular arc as


    shown in Figure.
    (a) What is the total electric field at P, the center of the
    arc?
    (b) Find the electric force that would be exerted on a
    25.00-nC point charge placed at P.
    Ans: a. 1.80 × 104 N/C to the right
    b. −8.98 × 10−5 N (to the left)
    Q11 According to the Coulomb’s Law formula, if you double the distance between two
    ions, how will this affect the electrostatic force between the ions?
    Q12 According to the Coulomb’s Law formula, if you double the charge on one of the
    two ions, how will this affect the electrostatic force between the two ions?

    You might also like