An ammeter indicates the current for a toaster is 5.0 amps when the toaster is connected to 120-V circuit. How much energy is given off by the toaster in 42.0 seconds?
show all the calculations leading to your answer
energy=power*time=volts*amps*timeinSeconds
To calculate the energy given off by the toaster, we need to use the formula:
Energy = Power × Time
First, we need to calculate the power consumed by the toaster. The formula for power is:
Power = Current × Voltage
Given that the current is 5.0 amps and the voltage is 120 volts, we can calculate the power used by the toaster:
Power = 5.0 A × 120 V
Power = 600 watts
Now, we can use the calculated power and the given time (42.0 seconds) to find the energy:
Energy = Power × Time
Energy = 600 W × 42.0 s
Energy = 25,200 joules (or 25.2 kJ)
Therefore, the toaster gives off 25,200 joules (or 25.2 kJ) of energy in 42.0 seconds.