an operating 100-watt lamp is connected to a 120-volt outlet. what is the total energy used by the lamp in 60. seconds
6.0x10^3
energy=power*timeInSeconds=100*60 =6Kjoules
To calculate the total energy used by the lamp in 60 seconds, you can use the formula:
Energy = Power x Time
In this case, the power of the lamp is 100 watts, and the time is 60 seconds.
Energy = 100 watts x 60 seconds
Now let's calculate the energy:
Energy = 6000 joules
Therefore, the total energy used by the lamp in 60 seconds is 6000 joules.
To find the total energy used by the lamp in 60 seconds, you need to calculate the power consumption (in watts) and then multiply it by the time duration (in seconds).
First, let's calculate the power consumption of the lamp connected to a 120-volt outlet. The power consumption of the lamp is given as 100 watts.
Now, we can use the formula: Power (P) = Voltage (V) x Current (I). In this case, we are given V (voltage) as 120 volts. Rearranging the formula, we can find the current (I) as follows:
I = P / V = 100 watts / 120 volts = 0.8333 amps (rounded to four decimal places)
So, the lamp is consuming 0.8333 amps of current.
Next, multiply the power consumption by the time duration to find the total energy used by the lamp:
Total energy (E) = Power (P) x Time (t)
In this case, P = 100 watts and t = 60 seconds.
E = 100 watts x 60 seconds = 6000 watt-seconds (or joules)
Therefore, the total energy used by the lamp in 60 seconds is 6000 joules.