Download Proposed Final Questions

1)
The electrical force between charges depends on
a) how much charge each charge has.
b) how far apart the charges are.
c) both of these.
d) neither of these.
2)
The difference between electric forces and gravitational forces include
a) dependence on distance.
b) the inverse square law.
c) infinite range.
d) repulsive interactions.
e) none of these.
3)
The current through a 10.  resistor connected to a 12 V power supply is
a) 1.2 A
b) 10 A
c) 12 A
d) 120 A
4)
A light bulb is connected to a 120 V outlet and has a 0.80 A current running through it. What
is the power flowing through the bulb?
a) 12 W.
b) 15 W.
c) 60 W.
d) 96 W.
e) 120 W.
5)
An ammeter should be connected in________and a voltmeter connected in ________.
a) parallel, series
b) series, series
c) parallel, parallel
d) series, parallel
6)
A small charged object experience a force of 1.9x10-7 N at a point where the electric field
intensity is 8.0x10-5 N/C. What is the charge on the object?
a) 2.4x10-3 C
b) 421 C
c) 1.5x10-11 C
d) 1.6x10-19 C
7)
If the conventional current is flowing from left to right in a wire, what direction are the
electrons flowing?
a) left to right
b) right to left
c) both left and right
d) electrons do not flow
8)
Electric field lines point away from _______________ charges.
a) positive
b) negative
c) any
d) non-electric
9)
A device that measures the amount of current in a circuit is a(n)
a) potentiometer.
b) resistor.
c) voltmeter.
d) ammeter.
10) Bits of paper stick to a plastic comb that has been rubbed because of
a) electrical charge.
b) nuclear forces.
c) gravity.
d) glue.
e) Timmaay!!
11)
Two point charges are separated by 0.015 m. Their charges are +2.0x10-6 C and –4.0x10-6 C.
What is the magnitude of the force acting between them?
a) 320 N
b) 3.6x10-8 N
c) 8.0x10-12 N
d) 3.1x10-3 N
12) What is the voltage difference across a 5.00  resistor that carries a current of 5.00 A?
a) 100 V
b) 25 V
c) 4.0 V
d) 1.0 V
13) Rubbing two objects such as plastic and wool together creates a static charge because
a) atoms are transferred from one object to another
b) the electrons in one object are repelled from the nuclei in the other object
c) electrons are transferred from atoms in one object to atoms in the other object
d) electrons become more widely distributed in each object
14) The power that is lost because wires heat up when they conduct currents is called
a) equivalent resistance.
b) specific heat.
c) voltage drop.
d) joule heating.
e) transmission deficit.
15) A pressure and the flow are to water as _____________ and _____________ are to
electricity.
a) power, current
b) voltage, current
c) power, voltage
d) voltage, resistance
e) current, voltage
16) An oil drop has a charge of -4.8x10-6C. How many electrons were either added or removed to
make this charge.
a) 3.0x10-13 electrons were removed.
b) 3.0x10-13 electrons were added.
c) 3.0x1013 electrons were removed.
d) 3.0x1013 electrons were added.
e) 1.6x10-14 electrons were added.