E = P x T is used to calculate which quantity?

E = P x T is used to calculate which quantity?

• A. Power (Watts)
• B. Energy (Joules)
• C. Time (Seconds)
• D. Charge (C)

Answer: (B)

Energy is the amount of work done or energy transferred, and it can be found by multiplying power by time. Power is the rate at which energy is used or produced, so knowing how fast energy is being transferred (power) and for how long (time) lets you compute the total energy that has moved: E = P × T. The units fit neatly: watts times seconds give joules, since 1 watt equals 1 joule per second. For example, a device using 100 watts for 1800 seconds transfers 100 × 1800 = 180,000 joules of energy. This relation isn’t about the other quantities—power is the rate, time is the duration, and charge is a different quantity entirely—so only energy comes from multiplying power by time.

Energy is the amount of work done or energy transferred, and it can be found by multiplying power by time. Power is the rate at which energy is used or produced, so knowing how fast energy is being transferred (power) and for how long (time) lets you compute the total energy that has moved: E = P × T. The units fit neatly: watts times seconds give joules, since 1 watt equals 1 joule per second. For example, a device using 100 watts for 1800 seconds transfers 100 × 1800 = 180,000 joules of energy. This relation isn’t about the other quantities—power is the rate, time is the duration, and charge is a different quantity entirely—so only energy comes from multiplying power by time.