1. Over the course of an 8.0 hour workday, 3.8 x 10ª C of charge passes through a typical computer (presuming it is in use the entire time). Determine the current for such a computer.

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Ohm's Law
Show all work on a separate sheet of paper and remember
to use units.
1. Over the course of an 8.0 hour workday, 3.8 x 104 C of
charge passes through a typical computer (presuming it is in
use the entire time). Determine the current for such a
computer.
2. The large window air conditioner in Anita Breeze's room
draws 11 amps of current. Determine the quantity of charge
that passes through Anita's window AC if the unit runs for
8.0 hours during the course of a day.
3. Determine the amount of time that the following devices
would have to be used before 1.0 x 10° C of charge passes
through them.
b. Incandescent night
a. LED night light (I = 0.0042 A)
light (I = 0.068 A)
c. 60-Watt incandescent light bulb (I = 0.50 A)
bathroom light fixture (I = 2.0 A)
d. Large
4. A power saw at the local hardware store boasts of having
a 15-Amp motor. Determine its resistance when plugged
into a 110-Volt outlet.
5. A coffee cup immersion heater utilizes a heating coil
with a resistance of 8.5 2. Determine the current through
the coil when operated at 110 V.
6. Defibrillator machines are used to deliver an electric
shock to the human heart in order to resuscitate an
otherwise non-beating heart. It is estimated that a current as
low as 17 mA (milliamp) through the heart is required to
resuscitate. Using 100,000. 2 as the overall resistance,
determine the output voltage required of a defibrillating
device.
7. A stun gun or TASER is designed to put out a few
seconds worth of electric pulses that impress a voltage of
about 1200 V across the human body. This results in an
average current of approximately 3.0 mA into a human
body. Using these figures, estimate the resistance of the
human body.
8. Determine the amount of electrical energy (in J) used by
the following devices when operated for the indicated times.
a. Hair dryer (1500. W) - operated for 5.0 minutes
b. Electric space heater (950. W) - operated for 4.0 hours
c. X-Box video game player (180. W) - operated for 2.00
hours
d. 42-inch LCD television (210. W) - operated for 3.00
hours
Transcribed Image Text:Ohm's Law Show all work on a separate sheet of paper and remember to use units. 1. Over the course of an 8.0 hour workday, 3.8 x 104 C of charge passes through a typical computer (presuming it is in use the entire time). Determine the current for such a computer. 2. The large window air conditioner in Anita Breeze's room draws 11 amps of current. Determine the quantity of charge that passes through Anita's window AC if the unit runs for 8.0 hours during the course of a day. 3. Determine the amount of time that the following devices would have to be used before 1.0 x 10° C of charge passes through them. b. Incandescent night a. LED night light (I = 0.0042 A) light (I = 0.068 A) c. 60-Watt incandescent light bulb (I = 0.50 A) bathroom light fixture (I = 2.0 A) d. Large 4. A power saw at the local hardware store boasts of having a 15-Amp motor. Determine its resistance when plugged into a 110-Volt outlet. 5. A coffee cup immersion heater utilizes a heating coil with a resistance of 8.5 2. Determine the current through the coil when operated at 110 V. 6. Defibrillator machines are used to deliver an electric shock to the human heart in order to resuscitate an otherwise non-beating heart. It is estimated that a current as low as 17 mA (milliamp) through the heart is required to resuscitate. Using 100,000. 2 as the overall resistance, determine the output voltage required of a defibrillating device. 7. A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a voltage of about 1200 V across the human body. This results in an average current of approximately 3.0 mA into a human body. Using these figures, estimate the resistance of the human body. 8. Determine the amount of electrical energy (in J) used by the following devices when operated for the indicated times. a. Hair dryer (1500. W) - operated for 5.0 minutes b. Electric space heater (950. W) - operated for 4.0 hours c. X-Box video game player (180. W) - operated for 2.00 hours d. 42-inch LCD television (210. W) - operated for 3.00 hours
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