Question

A toaster is on for 5 minutes, with a resistance of 65 ohms and a current of 3 amps. What is the amount of energy released by the toaster?

Answer 1

To calculate the amount of energy released by the toaster, we can use the formula for electrical energy:

Energy (in Joules) = Power (in Watts) × Time (in seconds)

First, we need to find the power consumed by the toaster, which can be calculated using the formula:

Power (in Watts) = Current (in Amperes) × Voltage (in Volts)

To find the voltage, we can use Ohm's law:

Voltage (in Volts) = Current (in Amperes) × Resistance (in Ohms)

Let's break down the calculations step by step:

1. Calculate the voltage: Voltage (in Volts) = 3 Amperes × 65 Ohms Voltage = 195 Volts

2. Calculate the power: Power (in Watts) = 3 Amperes × 195 Volts Power = 585 Watts

3. Convert the time to seconds (5 minutes to seconds): Time (in seconds) = 5 minutes × 60 seconds/minute Time = 300 seconds

4. Calculate the energy: Energy (in Joules) = 585 Watts × 300 seconds Energy = 175,500 Joules

So, the amount of energy released by the toaster in 5 minutes is 175,500 Joules.