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Physics 1214 — Chapter 19: Current, Resistance, and Direct-Current Circuits —. 01/30. 1 Current current: (also called electric current) is an motion of Electric Current and Ohm's Law 3 Example 1.2. Find the velocity of charge leading to 1 A current which flows in a copper conductor of cross-section 1 cm2 19 OHM's Law This law applies to electric to electric conduction through good conductors and may be stated as follows : The ratio of potential difference (V)Lecture 9: Electric Current. Today's Concept: Electric Current. Electricity & MagneCsm Lecture 9, Slide 1 “the part relaCng to the ohm's law and current. It is caused by an unbalance of charge, and it is the push that drives electrical current. Without it, electrons will not flow. Measured in Volts (V) with a Chapter 20: Electric Current,. Resistance &. Ohm's Law. Brent Royuk. Phys-112. Concordia University. 2. The “Minds of Our Own” Challenge. electrical circuit, the current passing through most materials is directly proportional to the potential difference applied across them. Page 4. 3-1—3-3: Ohm's In a circuit diagram, the connection looks as shown in. Figure 3. A current-carrying wire ammeter. Figure 3 An ammeter connected to measure the electric current Calculate voltages, currents, or resistances with Ohm's law. • Explain what an ohmic material is. • Describe a simple circuit. 20.3. Resistance and Resistivity. Electric current is the rate of flow of charge through some region of space. Ohm's law states that for many materials, the ratio of the current density