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WORD PROBLEMS. 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.
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=?
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.
Electric Charge Calculations. Electric charge is a property of matter where it experiences a force when in an electromagnetic field. The idea behind it is: Fundamental particles can have 0, +1 or −1 electric charge: + and − are pulled towards each other. + pushes + away. − pushes − away.
1. A source charge q exerts an electrical force of 4.0 x 10-17 N on an electron located at point P. What is the electric field strength at point P? 2. How much force is exerted on an alpha particle (see sheet #1) by an electric field when the α particle is placed at a location where the electric field strength is 75 N/C? 3.
IGCSE Physics: Electric Charge. • Consolidating understanding of electric charge. • Practicing exam style questions. 1. (a) Explain how clouds become charged in a thunderstorm
Key learning points. Electric charge, Q, is measured in coulombs (C). Electric current is a measure of the rate of flow of electric charge, calculated using: I = Q ÷ t. Potential difference is a measure of the energy transferred by each coulomb of charge, calculated using: V = E ÷ Q.
