Physics - Electric Forces & Fields
Two point charges are moved from 2cm apart to 6 cm apart. The electric force will be......
1/9 times as large
There is a 20 N force between two objects. If the charge of one is doubled, the new force is....
40 N
What is the force between two one Coulomb charges that are one meter apart?
9x10^9 N
Coulomb's Law is named after....
Charles Coulomb
Which sentence best describes electrical conductors?
Electrical conductors have charges that can move freely.
In which way is the electric force similar to the gravitational force?
Fe (net force) decreases as the distance between objects increases
Which of the following is not true of both electric and gravitational forces?
Forces are either attractive or repulsive
How much does the electric force change when the distance doubles?
It decreases by 4 times
When an object becomes positively charged, which of the following is most likely not true?
It has gained many protons from another object.
What occurs when two charges are brought closer together?
The electric force between the charges increases
What is true about electric and gravitational forces?
The inverse square law applies on both Potential energy is a function of distance of separation Forces are proportional to physical properties
Which is the correct statement regarding the drawing of electric field lines?
The lines never cross
One object has twice the charge as another. The equilibrium position is.....
closer to the object with less charge
