The headlamp of a car takes current of 0.4A from a 12V supply. Calculate the energy produced in 5mins.
We can use the formula:
Energy (in Joules) = Power (in Watts) x Time (in seconds)
First, we need to calculate the power consumed by the headlamp:
Power (in Watts) = Current (in Amps) x Voltage (in Volts)
Power = 0.4A x 12V = 4.8W
Now we can use the formula to find the energy produced in 5 minutes (300 seconds):
Energy = 4.8W x 300s = 1440 Joules
Therefore, the energy produced by the headlamp in 5 minutes is 1440 Joules.
I really like the formula for this
Thank you! The formula is a key tool in physics and engineering for calculating energy, power, and time. It's always useful to have a good formula to use in problem-solving.
To calculate the energy produced by the headlamp, we can use the formula:
Energy (E) = Power (P) x Time (t)
We need to find the power consumed by the headlamp. Power is calculated using the formula:
Power (P) = Current (I) x Voltage (V)
Given that the current (I) is 0.4A and the voltage (V) is 12V, we can find the power consumed:
P = 0.4A x 12V
P = 4.8W
Now we can calculate the energy produced in 5 minutes (t = 5 minutes = 5 x 60 seconds):
E = 4.8W x 5 minutes x 60 seconds/minute
E = 1440 joules
Therefore, the energy produced by the headlamp in 5 minutes is 1440 joules.