Question

1. In which direction do the electric field lines point surrounding a stationary, negative point charge?...

1.

In which direction do the electric field lines point surrounding a stationary, negative point charge?

Radially outward away from the charge.

Radially inward toward the charge.

In concentric circles around the charge.

The charge must be moving for an electric field to exist.

2. Two charged pith balls are suspended on very light strings as shown in the diagram below. When they are 20cm away from each it is noted that the Coulomb force on one pith ball is 0.40N. What will be the Coulomb force on that pith ball if the distance between the pith balls is doubled?

0.40N

0.20N

0.10N

0.80N

0.040N

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1. Direction of electric field lines is given by the direction of force on a positive charge located at that point. Now, negative charges attract positive charges, so direction of force on a positive charge due to negative charge is towards the charge.

So, direction of electric field lines due to negative charge is radially inward toward the charge.

2. According to coulumb's law, electric force between 2 point charges is inversely proportional to the square of distance between them. So, if distance is doubled , force becomes one-fourth.

So, if initial force was 0.40 N, new force will be 0.10 N.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Select True or False for the following statements about electric field lines. E-field lines point outward...
Select True or False for the following statements about electric field lines. E-field lines point outward from positive charges. E-field lines point inward toward negative charges. E-field lines may cross. A positive point charge released from rest will initially accelerate along an E-field line. E-field lines make circles around positive charges. E-field lines do not begin or end in a charge-free region except at infinity. Where the E-field lines are dense the E-field must be weak.
Which of the following is a correct statement? (1 point) The direction of the electric field...
Which of the following is a correct statement? (1 point) The direction of the electric field due to a negative point charge is directed away from the charge. The direction of the electric force on a positive charge is opposite to the direction of the electric field at its location. The magnitude of the electric field due to a point charge is inversely proportional to the square of the distance between the charge and the point. The unit of measurement...
1.When a charge q is placed at a certain point in an electric field, it experiences...
1.When a charge q is placed at a certain point in an electric field, it experiences a force toward the west of magnitude F. If instead a change 2q were placed at that same point what force would it experience? A.a force toward the east, of magnitude F/2 B.a force toward the east, of magnitude F C.a force toward the east, of magnitude 2F D.a force toward the west, of magnitude F/2 E.a force toward the west, of magnitude F...
Consider a charge of -0.3 C which is moved from a point in space at electric...
Consider a charge of -0.3 C which is moved from a point in space at electric potential V=3 volts to one at V=1 volts. The charge begins at rest and ends at rest. a)Along the way, does the average electric field point more or less toward the final point, or more or less away from it, on average? Justify your answer. b) Along the way, does the average electric force point more or less toward the final point, or more...
Do charges released from rest always move along electric field lines; i.e., does the charge stay...
Do charges released from rest always move along electric field lines; i.e., does the charge stay on the E field line at which it started? b) Based on your answer to a), would charges released with an initial velocity always move along electric field lines? c) Using kinematic quantities like position, velocity, and acceleration as well as the concept of a force to describe the general character of the motion of a [+] charge in motion near a single [+]...
The field lines of a positive charge will always point away from the charge. False True...
The field lines of a positive charge will always point away from the charge. False True It depends on the mass of the charge The atomic number comes from which subatomic particle(s)? Neutrons Protons Electrons Either answer b or c Isotones will be the same element, just a different version of that element? False True It depends on the atomic mass By removing electrons, one will have performed what process? Ionization Conservation of charge Coulomb’s Law Newton’s Laws of Motion...
1. In Ampere’s law, when we integrate the magnetic field along a loop, which are summing?...
1. In Ampere’s law, when we integrate the magnetic field along a loop, which are summing?    a. the field components that are parallel to the path elements, at every point along the loop    b. the field components that are perpendicular to the path elements, at every point along the loop    c. the magnitudes of the field vectors at every point along the loop 2. Which describes the magnetic field at a point inside a long wire that...
1. In Ampere’s law, when we integrate the magnetic field along a loop, which are summing?...
1. In Ampere’s law, when we integrate the magnetic field along a loop, which are summing?    a. the field components that are parallel to the path elements, at every point along the loop    b. the field components that are perpendicular to the path elements, at every point along the loop    c. the magnitudes of the field vectors at every point along the loop 2. Which describes the magnetic field at a point inside a long wire that...
1. Which describes the vector calculation of the Biot-Savart law?    a. The length element in...
1. Which describes the vector calculation of the Biot-Savart law?    a. The length element in the direction of the current is crossed into a vector directed from that element toward the point of measurement.    b. The length element in the direction of the current is dotted into a vector directed from that element toward the point of measurement.    c. The magnetic field vector is crossed into a vector directed from a current-length element toward the point of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT