1) The materials with the lowest resistance are called
A) conductors
B) superconductors
c) semiconuctors
D) insulators
2) An electron is moved from point A to point B along an equipotential surface.
A) The electron performs work in moving from point A to point B.
B) Work is required to move the electron from point A to point B.
C) Work is both required and performed in moving the electron from point A to point B.
D) No work is required to move the electron from point A to point B.
3) The resistance of a wire
A) depends on its length
B) depends on its thickness
C) depends on temperature
D) all of the above
4) A proton is moved from point A to point B along an equipotential surface.
A) The proton's potential energy increases as it is moving from point A to point B.
B) The proton's potential energy decreases as it is moving from point A to point B.
C) The proton's potential energy stays constant as it is moving from point A to point B.
5) A neutron is moved from point A to point B along an equipotential surface.
A) The neutron's potential energy increases as it is moving from point A to point B.
B) The neutron's potential energy decreases as it is moving from point A to point B.
C) The force exerted on the neutron changes as it is moving from point A to point B.
D) None of the above.
6) You have two identical resistors 50kΩ each and a 1.5 V battery. Which of the following statements are true
A) the current drawn is bigger if the resistors are in series
B) the current drawn is bigger if the resistors are in parallel
C) the voltage across each resistor is bigger if the resistors are in series
D) the voltage across each resistor is smaller if the resistors are in series
7) As a neutron moveis along the electric field line
A) its potential decreases
B) its potential increases
C) its potential doesn't change
8) The electric field shown
A) increases to the right.
B) increases down.
C) decreases to the right.
D) decreases down.
E) is uniform.
9) If an atom became a negative ion then
A) at least one electron was removed from it
B) at least one electron was added to it
C) at least one neutron was removed from it
D) at least one proton was added to it