Answer Happy

Introduction: When an electrical potential exists in a circuit, a current may flow. Current is the flow of V-I electrons in a circuit. Resistance in the circuit slows the flow of the electrons, reducing the current in the circuit. We will use the mathematical form of Ohm's Law frequently when we investigate electric current and circuits later in this unit. cham's Lan Additional Material Needed: Clean Drinking Straw Procedure Part I Wire Resistance: VISIT THE SITE: https://phet.colorado.edu/en/simulation ... -in-a-wire • Blow through the drinking straw. . Cut the drinking straw in half and blow through a half-straw. • Describe the effect of length on ease to blow air through the straw. . Cut the halves again in half. . With the four pieces, blow through one, then blow through all four made into a larger, square-shaped straw. • Describe the effect of straw size (diameter) on ease to blow air through the straw. • Now, open the PhET Simulation Electricity, Magnets, and Circuits à Resistance in a Wire As wire length (cm) increases, the resistance (22) As wire arca (cm) increases, the resistance (12) As wire density (cm) increases, the resistance (22) Procedure Part II: Ohms Law: Electricity, Magnets, and Circuits à Ohm's Law VISIT THE SITE: https://phet.colorado.edu/en/simulation/ohms- law .mA is milliamps, and milliamps equals one Ampere. • Move the potential (volts) and resistance (ohms) sliders and observe the current (amps) As voltage increases, current As resistance increases, current Fill out the tables below and check your work in the simulation.(