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Name Chapter 34 Electric Current Calculating Power Class Date If four 1.5-V batteries deliver 1.25-A current to a small motor, what is the power provided to the motor? 1. Read and Understand What information are you given? voltage = V = 4 x 1.5 V = 6.0 V current=I= 1.25 A 2. Plan and Solve What unknown are you trying to calculate? power = P= ? What mathematical expression can you use to calculate the unknown? P = VI P= (6.0 V)(1.25 A) = 7.5 W 3. Look Back and Check Is your answer reasonable? Yes, the number calculated is a product of current and voltage and the units indicate power. Math Practice woy m On a separate sheet of paper, solve the following problems. 1. An 8.0-V power supply delivers a 1.75-A current to a circuit. Calculate the power provided to the circuit.

Name Chapter 34 Electric Current Calculating Power Class Date If four 1.5-V batteries deliver 1.25-A current to a small motor, what is the power provided to the motor? 1. Read and Understand What information are you given? voltage = V = 4 x 1.5 V = 6.0 V current=I= 1.25 A 2. Plan and Solve What unknown are you trying to calculate? power = P= ? What mathematical expression can you use to calculate the unknown? P = VI P= (6.0 V)(1.25 A) = 7.5 W 3. Look Back and Check Is your answer reasonable? Yes, the number calculated is a product of current and voltage and the units indicate power. Math Practice woy m On a separate sheet of paper, solve the following problems. 1. An 8.0-V power supply delivers a 1.75-A current to a circuit. Calculate the power provided to the circuit.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Name Chapter 34 Electric Current Calculating Power Class Date If four 1.5-V batteries deliver 1.25-A current to a small motor, what is the power provided to the motor? 1. Read and Understand What information are you given? voltage = V = 4 x 1.5 V = 6.0 V current=I= 1.25 A 2. Plan and Solve What unknown are you trying to calculate? power = P= ? What mathematical expression can you use to calculate the unknown? P = VI P= (6.0 V)(1.25 A) = 7.5 W 3. Look Back and Check Is your answer reasonable? Yes, the number calculated is a product of current and voltage and the units indicate power. Math Practice woy m On a separate sheet of paper, solve the following problems. 1. An 8.0-V power supply delivers a 1.75-A current to a circuit. Calculate the power provided to the circuit.
Transcribed Image Text:Name Chapter 34 Electric Current Calculating Power Class Date If four 1.5-V batteries deliver 1.25-A current to a small motor, what is the power provided to the motor? 1. Read and Understand What information are you given? voltage = V = 4 x 1.5 V = 6.0 V current=I= 1.25 A 2. Plan and Solve What unknown are you trying to calculate? power = P= ? What mathematical expression can you use to calculate the unknown? P = VI P= (6.0 V)(1.25 A) = 7.5 W 3. Look Back and Check Is your answer reasonable? Yes, the number calculated is a product of current and voltage and the units indicate power. Math Practice woy m On a separate sheet of paper, solve the following problems. 1. An 8.0-V power supply delivers a 1.75-A current to a circuit. Calculate the power provided to the circuit.
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