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The three basic principles for this tutorial can be explained using electrons, or more specifically, the charge they create: Voltage is the difference in charge between two points. Current is the rate at which charge is flowing. Resistance is a material's tendency to resist the flow of charge (current).
Electrical Current, Charge and Potential Worksheet. 1. Calculate the unknown quantity. (a) I = 0.4 A, t = 20 s. Q = ? (b) Q = 240 C, t = 300 s, I = ? (c) I = 2 A, Q = 400 C, t=? (d) Q = 140 C, t = 4 minutes, I = ? (e) I = 0.3 A, t = 1.5 hours, Q = ? 2. A current of 1.5 A flows through a lightbulb for 10 minutes.
Worksheet - Coulomb’s Law 1. A negative charge of - 2.0 C and a positive charge of 3.0 C are separated by 80 m. What is the force between the two charges? 2. A negative charge of - 0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m away. What is the magnitude of the second charge? 3.
As current is defined in terms of quantity of charge delivered per unit of time, there is a relationship between charge, current and time, given by: q = I t (or I = q/t), where: • q is the charge measured in coulombs (C), • I is the current measured in amps (A), and. • t is the time measured in seconds (s).
Charges, Coulomb’s Law, and Electric Fields Some experimental facts: Experimental fact 1: Electric charge comes in two types, which we call (+) and (−). An atom consists of a heavy (+) charged nucleus surrounded by light (−) electrons. nucleus = (+) charged protons and (0) charged neutrons
1. If there is a current of 10 amperes in a circuit for 10 minutes, what quantity of electric charge flows in through the circuit? 2. How much current must there be in a circuit if 100 coulombs flow past a point in the circuit in 4 seconds? 3. How much time is required for 10 coulombs of charge to flow past a point if the rate of flow
Charging an Object Section 12.1. Each of the diagrams in Student Worksheets 12.1B–12.1C represent a method of charging an object. Explain the steps involved in each method and indicate on the diagram, using the flow of electrons.
