Chapter 22 Quiz

A proton and an electron a. attract each other b. repel each other c. neither

A. attract each other

Strip electrons from an atom and the atom becomes a a. positive ion b. negative ion c. different element d. molecule

A. positive ion

Two protons attract each other gravitationally and repel each other electrically. By far the greater force is a. gravitational attraction b. electrical repulsion c. neither; they are the same

B. electrical repulsion

To say that electric charge is quantized is to say that the charge on an object a. may occur in an infinite variety of quantities b. is a whole-number multiple of the charge of one electron c. will interact with neighboring electric charges d. can be neither created nor destroyed e. is sometimes positive

B. is a whole-number multiple of the charge of one electron

To say that an object is electrically polarized is to say a. it is electrically charge b. its charges have been rearranged c. its internal electric field is zero d. it is partially magnetic

B. its charges have been rearranged

If you comb your hair and the comb becomes positively charged, then your hair becomes a. positively charge b. negatively charge c. discharged

B. negatively charged

Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore, the particles must have a. the same sign b. opposite signs c. the same mass d. the same size e. need additional information

B. opposite signs

The electric field inside an uncharged metal ball is zero. If the ball is negatively charged, the electric field inside the ball is then a. less than zero b. zero c. greater than zero

B. zero

The electrical force between charges depends on the charges' a. magnitudes b. separation distance c. both d. neither

C. both

Which force binds atoms together to form molecules? a. gravitational b. nuclear strong force c. electrical Coulomb force d. centripetal e. none of these

C. electrical Coulomb force

To say that electric charge is conserved is to say that electric charge a. may occur in an infinite variety of quantities b. is a whole-number multiple of the charge of one electron c. will interact with neighboring electric charges d. can be neither created nor destroyed e. is sometimes negative

D. can be neither created nor destroyed

A conductor differs from a insulator in that a conductor a. has more electrons than protons b. has more protons than electrons c. has more energy than an insulator d. has faster moving molecules e. none of these

E. none of these