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 calculations leading to an answer.
Formula for power given the current and voltage:
P = IV
Substituting,
P = 5.0 * 120
P = 600 Watts
Note that Watts is also Joules / second. Thus to get the energy, we multiply the power by the time:
P = E/t
E = Pt
E = 600 J/s * 42 s
E = 25200 J
hope this helps~ `u`
THANK YOU !!!!
To calculate the energy given off by the toaster, we can use the formula:
Energy (E) = Power (P) x Time (t)
To find power (P), we can use Ohm's Law:
Power (P) = Current (I) x Voltage (V)
Given that the current (I) is 5.0 A and the voltage (V) is 120 V, we can substitute these values into the formula:
P = 5.0 A x 120 V
P = 600 W
Now we have the power (P) of the toaster.
Next, we can calculate the energy (E) using the formula E = P x t, where t is the time in seconds.
Given that the time (t) is 42.0 seconds, we can substitute these values into the formula:
E = 600 W x 42.0 s
E = 25200 J (joules)
Therefore, the toaster gives off 25,200 joules of energy in 42.0 seconds.