Final answer:
The electric drill uses approximately 21600 joules of electrical energy during one minute of operation, calculated by the power formula, P = V x I, and the energy formula, E = P x t, with the power being 360 watts and time being one minute (converted to 60 seconds).
Step-by-step explanation:
The electrical energy used by the drill can be calculated using the power formula, which is Power (P) = Voltage (V) × Current (I). Here, the drill operates at 120 volts and draws a current of 3.0 amps. The power would thus be 120 V × 3.0 A = 360 watts (W).
To find the energy used during one minute of operation, we use the energy formula, which is Energy (E) = Power (P) × Time (t). Since power is in watts and time is in minutes, we should convert minutes to seconds to use the standard unit for energy (joules), whereby 1 minute equals 60 seconds.
Therefore, the energy consumed in one minute is 360 W × 60 s = 21600 joules (J). So, the drill uses approximately 21600 J of electrical energy during one minute of operation.