Batteries are rated by their voltage, but also by the energy that they can provide. A...
Batteries are rated by their voltage, but also by the energy that they can provide. A typical D-cell battery has a voltage of 1.5 V, and is also rated at 15,000 mA•h—a product of current and time.
a. How much charge can flow from the battery before is discharged?
b. For how long could this battery power a 1.5 W flashlight bulb?
Homework Answers
Add Answer to:
Batteries are rated by their voltage, but also by the energy
that they can provide. A...
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3...
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
Laptop batteries are rated in W⋅h, the product of the power (in W) that the battery...
Laptop batteries are rated in W⋅h, the product of the power (in W) that the battery can provide and the time (in h) that it can provide this power. For instance, a 50 W⋅h battery can provide 50 W for 1.0 h, 25 W for 2.0 h, and so on. A 10.8 V laptop battery is rated at 76 W⋅h. What is the total charge the battery can provide to the laptop before the battery is depleted?
A pair of alkaline D batteries can provide about 80000 J of electric energy at 3.0...
A pair of alkaline D batteries can provide about 80000 J of electric energy at 3.0 V. If a current of 0.5 A flows through two D batteries while they’re in the circuit of a flashlight, how long will the batteries be able to provide power to the flashlight? (answer must be in hours)
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can pass through the battery before the battery's chemical energy must be restored by the car's generator or some other source. The amp-hour unit is convenient for simple calculations. For example, a 60-amp-hour battery can supply a current of 1.0 A for 60 h (or 60 A for 1.0 h) before going dead. Find the energy stored in the following. (a) a 54 A-h, 14...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can pass through the battery before the battery's chemical energy must be restored by the car's generator or some other source. The amp-hour unit is convenient for simple calculations. For example, a 60-amp-hour battery can supply a current of 1.0 A for 60 h (or 60 A for 1.0 h) before going dead. Find the energy stored in the following. (a) a 54 A-h, 13...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can pass through the battery before the battery's chemical energy must be restored by the car's generator or some other source. The amp-hour unit is convenient for simple calculations. For example, a 60-amp-hour battery can supply a current of 1.0 A for 60 h (or 60 A for 1.0 h) before going dead. Find the energy stored in the following. (a) a 58 A-h, 13...
The total charge a battery can supply is rated in mA·h, the product of the current...
The total charge a battery can supply is rated in mA·h, the product of the current and the time that the battery can provide this current. A battery rated at 1000 mA·h can supple a current of 1000 mA for 1.0 h, 500 mA for 2.0 h, and so on. (a) A typical AA rechargeable battery has a voltage of 1.2V and a rating of 1800 mA·h. For how long could this battery drive current through a long, thin wire...
Electrochemistry of Voltaic Cells: Batteries are voltaic cells. A typical AA battery is labeled a...
Electrochemistry of Voltaic Cells: Batteries are voltaic cells. A typical AA battery is labeled as providing an electrical potential of 1.5 V. After a long period of time, a battery in use may no longer provide enough electrical power to the device. Suppose you have checked an old battery with a voltage probe and measured a potential of 0.9 V. What chemical change could be responsible for this change in voltage (and power)? Write one or two complete sentences to...
Electrochemistry of Voltaic Cells: Batteries are voltaic cells. A typical AA battery is labeled as providing...
Electrochemistry of Voltaic Cells: Batteries are voltaic cells. A typical AA battery is labeled as providing an electrical potential of 1.5 V. After a long period of time, a battery in use may no longer provide enough electrical power to the device. Suppose you have checked an old battery with a voltage probe and measured a potential of 0.9 V. What chemical change could be responsible for this change in voltage (and power)? Write one or two complete sentences to...
(a) What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries,...
(a) What is the voltage output (in V) of a transformer used for rechargeable flashlight batteries, if its primary has 490 turns, its secondary 8 turns, and the input voltage is 122 V? (b) What input current (in mA) is required to produce a 4.00 A output? (c) What is the power input (in W)?
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
Car batteries are often rated in amp-hours. This rating indicates the quantity of charge that can pass through the battery before the battery's chemical energy must be restored by the car's generator or some other source. The amp-hour unit is convenient for simple calculations. For example, a 60-amp-hour battery can supply a current of 1.0 A for 60 h (or 60 A for 1.0 h) before going dead. Find the energy stored in the following. (a) a 54 A-h, 14...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago