Answered: 1. Make a Venn Diagram comparing emf of… | bartleby

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B. Directions: Read, understand, and perform the tasks by applying what you learned.
1. Make a Venn Diagram comparing emf of a source and potential difference across the
circuit.
2. The battery supplies a maximum voltage of 12 V. When it is connected to an external
circuit, the voltage measured by the voltmeter across the circuit is only 10 V. Is this
possible? Explain your answer.
3. Why do the problems occur when an ammeter is connected in parallel with the lamp?

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3. Four capacitors are connected to an EMF as shown with C₂ = 20 μF, C₂ = 4 μF, C₂ = 3 μF, and C₁ = 4 μF. The voltage across C₂ is 20 V. a. What is the equivalent capacitance of the circuit? Redraw circuit at each step. b. What is the EMF? You may (but do not need to) make a table similar to the first problem to help organize your calculation. W B C₁ C₂ C₂ CA
7. A circuit is comprised of a non-ideal emf device (that is, one that has an internal resistance r) and two resistors R, and R2. a. Draw this configuration for the case where the three resistances are configured in parallel. b. Draw an arrow representing the direction in which the current leaves the emf device. c. Find an expression for current, in terms of the emf, r, R1, and R2.
2. The headlight in a car is connected to a 12 V battery. The light bulb uses 55 W of power. a. What is the current flowing out of the positive terminal of the battery? b. What is the current flowing into the negative terminal of the battery?
4. The circuit contains four resistors and an ideal battery. a. What is the equivalent resistance of this circuit? b. Using series and parallel rules, what is the current through the 24.0 Ω resistor? c. Check your answer in (b) by solving for the current using Kirchhoff rules. d. If the battery was not ideal, would you expect your answer in (b) to increase, decrease, or remain the same? Explain your answer.
2. An RC circuit is pictured. a. Find the current at time t-o. b. Find the current at time t-0.10 s c. Find the charge on the capacitor after two time constants have passed. d. How long will it take the capacitor to reach 75.0% of its final charge? C 42 HF R 5.3 ks (initially uncharged) Switch (closed at t-o)
a. What is the equivalent resistance of this circuit? Give your answer in Ohms b. What is the current provided by the battery? c. What is the voltage drop across Resistor 1 (R1)? d. What is the current through Resistor 2 (R2)? e. Since R3 and R4 are in series, the current through them must be equal (I3 = I4). What is this current? f. What is the total power dissipated by this circuit? Remember that total power dissipated is the sum of the power dissipated by each resistor.
A. Three resistors with resistances of 9 Ω, 18 Ω, and 30 Ω are in a series circuit with a 12 volt battery. What is the total resistance of the resistors in the circuit? B. What is the current flow through the resistors in #7 above? C. What is the total power of three 10 ohm bulbs when they are connected in a 12 volt series circuit?
1. Identical lightbulbs are connected to identical batteries in three circuits. A (a) The voltage of the battery in circuit 2 is 12 V. What is the voltage of bulbs B and C? Explain. (2) (3) (b) The current through the battery of circuit 3 is 3 A. What is the current through bulb D and bulb E? Explain. B
a) Find the magnitude of the current through the 20.0 Ω resistor. b) Find the direction of the current through the 15.0 Ω resistor. Circle one. Explain your answer below. The current goes toward the lower right of the circuit OR toward the upper left of the circuit. c) Find the voltage drop across the 10.0 Ω resistor.
3. Four capacitors are connected to an EMF as shown with C₂ = 20 μF, C₂ = 4 μF, C₂ = 3 μF, and C₁ = 4 μF. The voltage across C₂ is 20 V. a. What is the equivalent capacitance of the circuit? Redraw circuit at each step. b. What is the EMF? You may (but do not need to) make a table similar to the first problem to help organize your calculation. B d. What is the total energy stored in the capacitors? Do it the easy way! to C₂ c. What would a voltmeter read if the COM lead is at A and the V lead is at B? In other words, what is VB - V₁? C4
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