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WorksheetsElectrical Power and Circuit Quiz
Total questions: 5
Worksheet time: 15mins
Problem 1: Finding Power from Given Current and Voltage
A fan operates with a current of I = 1.2 A and a voltage of V = 15 V. Question: What is the power consumed by the fan?
Problem 2: Finding Voltage for a Given Power and Current
A power tool consumes P = 300 W of power and uses a current of I = 2.5 A. Question: What is the voltage across the tool?
Problem 3: Using Ohm's Law to Find Power
A resistor has a resistance of R = 5 Ω and is connected to a V = 10 V power source. Find the current I using Ohm’s Law: Find the power P consumed by the resistor:
Problem 4: Power with Ohm’s Law (Finding Resistance)
A device uses P = 50 W of power and is connected to a V = 25 V power source. find the current: find the resistance R:
Problem 5: Current voltage tradeoff for a given power
A 5 Watt headlamp has wires that can carry a maximum of .5 amps of current. What should the battery voltage be? This has to be able to run on Usb power which is 5 Volts What capacity wire should they use (what is the current draw of the circuit now)
