If a 3 V battery supplies 5 A of current, then the amount of energy de...
Given information:
A 3 V battery supplies 5 A of current.
Calculating energy:
The amount of energy delivered by a battery can be calculated using the formula:
Energy (E) = Power (P) × Time (t)
Power can be calculated using the formula:
Power (P) = Voltage (V) × Current (I)
Substituting the given values, we have:
Power (P) = 3 V × 5 A = 15 W
Calculating energy in one hour:
We are required to find the amount of energy delivered in one hour. Since power is given in watts and time is given in seconds, we need to convert the time to hours.
There are 3600 seconds in one hour, so:
Time (t) = 1 hour = 3600 seconds
Substituting the values into the formula:
Energy (E) = Power (P) × Time (t) = 15 W × 3600 s = 54,000 J
Converting energy to kJ:
Since the answer is required in kilojoules (kJ), we need to convert the energy from joules to kilojoules.
1 kJ = 1000 J
Therefore:
Energy (E) in kJ = 54,000 J ÷ 1000 = 54 kJ
Final answer:
The amount of energy delivered by the 3 V battery in one hour is approximately 54 kJ.