An automobile battery has an emf of 12.6 V and an internal resistance of 0.0710 2. The headlights together have an equivalentresistance of 5.40 (assumed constant).(a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter youranswer to at least two decimal places.)12.42× V(b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of currentin the motor? (Enter your answer to at least two decimal places.)10.10× V

Answered: Image /qna-images/answer/ffb3f731-8767-43d9-8c58-753ca8b394e3.jpg

Answered: An automobile battery has an emf of…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 1OQ: If the terminals of a battery with zero internal resistance are connected across two identical...

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Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew = 2R0) while the voltage is adjusted such that the current is constant, what are the ratios (a) Pnew/P0 and (b) Vnew/V0? If, instead, the resistance is held constant while Pnew = 2P0, what are the ratios (c) Vnew/V0, and (d) Inew/I0?
Electric current I enters a node with three resistors connected in parallel (Fig. CQ18.5). Which one of the following is correct? (a) I1 = I and I2 = I3 = 0. (b) I2 I1 and I2 I3. (c) V1 V2 V3 (d) I1 I2 I3 0. Figure CQ18.5
For the circuit shown in Figure P28.55. the ideal voltmeter reads 6.00 V and the ideal ammeter reads 3.00-k. Find (a) the value of K, (b) the emf of the battery, and (c) the voltage across the 3.00-kft resistor.
When resistors with different resistances are connected in parallel, which of the following must be the same for each resistor? Choose all correct answers, (a) potential difference (b) current (c) power delivered (d) charge entering each resistor in a given time interval (e) none of those answers
(a) What is the internal resistance of a voltage source if its terminal voltage drops by 2.00 V when the current supplied increases by 5.00 A? (b) Can the emf of the voltage source be found with the information supplied?
Explain why R=R0(1 + a?T) for the temperature variation of the resistance R of an object is not as accurate as P=P0(1 + a?T) which gives the temperature variation of resistivity P.
A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0790 2. The headlights together have an equivalent resistance of 3.40 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) V (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.) V Need Help? Read It TICE ANOTHER Watch It
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0670 . The headlights together have an equivalent resistance of 3.20 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) V (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.) V
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0830 Ω. The headlights together have an equivalent resistance of 5.70 Ω (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.)
An automobile battery has an emf of 12.6 V and an internal resistance of 0.0540 2. The headlights together have an equivalen resistance of 7.70 2 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of curre in the motor? (Enter your answer to at least two decimal places.) V Submit Answer
In the circuit shown in (Figure 1) all meters are idealized and the batteries have no appreciable internal resistance. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of A complex network. Figure 25.0+ V 100.0 Ω a 115.0 S V 36 V 75.0 A Ω b 1 of 1 impi pitivas par Part C With the switch closed, find the reading of the voltmeter. Express your answer in volts. V = Submit Part D I = ΑΣΦ With the switch closed, find the reading of the ammeter. Express your answer in amperes. V7 ΑΣΦ Submit Request Answer Request Answer ? V A

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