10. Which combination of resistors will produce the lowest total resistance in a circuit? d. three 10-2 resistors in parallel a. two 10-9 resistors in series b. two 10-2 resistors in parallel e. four 10-2 resistor in series c. three 10-Q resistors in series
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- Which of the following is TRUE about drift velocity? A. It refers to the fast movement of electrons after introducing potential difference in a circuit. B. It refers to the amount of current a conductor can hold C. It refers to the gradual movement of the electrons towards to the other terminal after introducing potential difference in a circuit D. It refers to the path the current is taking in a circuit2. To explore resistors in series and parallel, we will use a virtual lab for DC circuits. Open your web browser and go to the following site: https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction- kit-dc_en.html (a) Construct a circuit with resistors (or light bulbs) in series and record current and voltage. How does the current through the resistor (or the bulb) in a single-resistor circuit with the current through the same resistor when it is connected in compare series with a second resistor? (b) Now construct a circuit with resistors (or light bulbs) in parallel and record current and voltage. Compare the current through the battery in the series circuit with the current through the battery in the parallel circuit. Is it lower, the same, or higher?2. For parallel circuits, you saw that the potential difference across each resistor was the same as the potential difference of the battery. Use your rule for potential difference in series circuits to explain why this would happen. Hint: Imagine following an electron as it leaves the battery, travels one of the paths through the circuit, and returns to the batter What is true about the changes in potential difference for the electron in each type of circuit? What would happen to the potential difference if you only had one resistor in series?
- 10. Using Kirchhoff's rules, determine the currents and their directions through the 60, 30, 50, and 20 ohm resisters.** 603 -Muw 501 20-22 30-52 um 90v 45 V6. Which of the following would have an effect on the resistance of a conducting wire? A. The emf of the battery to which the resistor is connected B. The current passing the through the conductor C. The manner in which it is connected to other resistors D. The material from which the wire is made.1. A series circuit has 3 resistors of values 10, 20, and 30 Ohms and a current of 2.0 Amps. What must be the voltage supplied to the circuit? a) 50 volts b) 250 volts c) 120 volts d) 25 volts 21V , 102 50 50 2. In the above 10-Ohm resistor, what is the current reading after the power supply? a) 0.60 A b) 3.0 A ) 1.2A d) 2.4A