phy 112 midterm (rio salado) Questions With Complete
Solutions
A 1.5V battery connects to a 10 Ω resistor. The power dissipated
by the resistor is Correct Answers 0.23 W
A 9.0V battery connects to a wire resistor. The wire resistor is
tungsten (ρ = 5.6 x 10-8 Ω-m) 0.5 m long, has a radius of 1.2 x
10-5 m. What is the current through the resistor? Correct
Answers 0.15 A
A battery connects to a resistor. The rate of energy dissipated by
the resistor is 1.44 W. The rate of energy supplied by the battery
is Correct Answers equal to 1.44 W
A battery with a potential difference of V connects to a resistor,
and the resulting current is measured. You remove the battery,
and a new battery with a potential difference of 2V is put in its
place. As a result, Correct Answers the current will double
A battery with an emf of 12 V connects in parallel to a 50 Ω and
25 Ω resistor. The current through the battery is 0.70 A. What is
the internal resistance of the battery? Correct Answers 0.44 Ω
A device plugged into a wall outlet experiences an alternating
current. The RMS current value is 2 A. The peak current is
Correct Answers 2.8 A
A light bulb connects to a battery. A second, identical light bulb
connects in parallel to the first light bulb (see below). The
connecting wires have negligible resistance. When the switch is
, closed, the original light bulb will Correct Answers experience
no change in brightness
A particle with a charge of +2 μC is at the position marked by
the x. Which statement concerning the particle's energy at this
position is most accurate? Correct Answers The particle will
have a positive energy term
A particle with a mass of 0.01 kg and a net charge of -0.05 C
accelerates from rest through a uniform electric field. If the
strength of the field is 2000 V/C, what is the speed of the
particle after traveling for 0.5 m? Correct Answers 100 m/s
A particle with a net charge of -2 μC is halfway between two
particles with a net charge of +4 μC and +6 μC, respectively.
The two positively charged particles are 10 cm apart. What is
the magnitude of the net force on the negative particle? Correct
Answers 14.4 N
A particular alternating voltage supply completes 10 full voltage
cycle every 1 sec. A resistor connects to the alternating voltage
supply. The resulting current will cycle at a frequency Correct
Answers equal to 10 Hz
A positive particle begins at a position near a negative plate and
ends at a position near a positively charged plate. Which
statement is most accurate? Correct Answers Work is done on
the particle so that the particle will end with more energy.
A positively charged plastic balloon filled with air will stick to a
neutrally charged nonmetal ceiling. Which of the following is
Solutions
A 1.5V battery connects to a 10 Ω resistor. The power dissipated
by the resistor is Correct Answers 0.23 W
A 9.0V battery connects to a wire resistor. The wire resistor is
tungsten (ρ = 5.6 x 10-8 Ω-m) 0.5 m long, has a radius of 1.2 x
10-5 m. What is the current through the resistor? Correct
Answers 0.15 A
A battery connects to a resistor. The rate of energy dissipated by
the resistor is 1.44 W. The rate of energy supplied by the battery
is Correct Answers equal to 1.44 W
A battery with a potential difference of V connects to a resistor,
and the resulting current is measured. You remove the battery,
and a new battery with a potential difference of 2V is put in its
place. As a result, Correct Answers the current will double
A battery with an emf of 12 V connects in parallel to a 50 Ω and
25 Ω resistor. The current through the battery is 0.70 A. What is
the internal resistance of the battery? Correct Answers 0.44 Ω
A device plugged into a wall outlet experiences an alternating
current. The RMS current value is 2 A. The peak current is
Correct Answers 2.8 A
A light bulb connects to a battery. A second, identical light bulb
connects in parallel to the first light bulb (see below). The
connecting wires have negligible resistance. When the switch is
, closed, the original light bulb will Correct Answers experience
no change in brightness
A particle with a charge of +2 μC is at the position marked by
the x. Which statement concerning the particle's energy at this
position is most accurate? Correct Answers The particle will
have a positive energy term
A particle with a mass of 0.01 kg and a net charge of -0.05 C
accelerates from rest through a uniform electric field. If the
strength of the field is 2000 V/C, what is the speed of the
particle after traveling for 0.5 m? Correct Answers 100 m/s
A particle with a net charge of -2 μC is halfway between two
particles with a net charge of +4 μC and +6 μC, respectively.
The two positively charged particles are 10 cm apart. What is
the magnitude of the net force on the negative particle? Correct
Answers 14.4 N
A particular alternating voltage supply completes 10 full voltage
cycle every 1 sec. A resistor connects to the alternating voltage
supply. The resulting current will cycle at a frequency Correct
Answers equal to 10 Hz
A positive particle begins at a position near a negative plate and
ends at a position near a positively charged plate. Which
statement is most accurate? Correct Answers Work is done on
the particle so that the particle will end with more energy.
A positively charged plastic balloon filled with air will stick to a
neutrally charged nonmetal ceiling. Which of the following is
