Concept explainers
(a)
The current for the given circuit
Answer to Problem 50PE
Explanation of Solution
Given information:
The voltage of alkaline cell is
An internal resistance is
Voltmeter is used with
The given figure is
Introduction:
Kirchhoff's second rule states that in a closed loop the sum of all the voltages is equal to zero.
Kirchhoff's junction rule states that the sum of all the currents entering a junction is equal to the sum of all the currents leaving the junction.
Ohms law states that at constant temperature potential difference
Where
Equivalent resistance of several resistors connected in series is
It is known that
Ohms law states that at constant temperature potential difference
Where
Equivalent resistance of several resistors connected in series is
It is given that
Resistors are connected in series so
Substitute all the values in
Conclusion:
The current for the given circuit is
(b)
The terminal voltage of the given circuit
Answer to Problem 50PE
Explanation of Solution
Given information:
The voltage of alkaline cell is
An internal resistance is
Voltmeter is used with
The given figure is
Introduction:
Kirchhoff's second rule states that in a closed loop the sum of all the voltages is equal to zero.
Kirchhoff's junction rule states that the sum of all the currents entering a junction is equal to the sum of all the currents leaving the junction.
Ohms law states that at constant temperature potential difference
Where
Equivalent resistance of several resistors connected in series is
It is known that
Ohms law states that at constant temperature potential difference
Where
It is given that
Substitute all the values in
Conclusion:
The terminal voltage of the given circuit is
(c)
The ratio of the measured terminal voltage to the emf for the given circuit
Answer to Problem 50PE
Explanation of Solution
Given information:
The voltage of alkaline cell is
An internal resistance is
Voltmeter is used with
The given figure is
Introduction:
Kirchhoff's second rule states that in a closed loop the sum of all the voltages is equal to zero.
Kirchhoff's junction rule states that the sum of all the currents entering a junction is equal to the sum of all the currents leaving the junction.
Ohms law states that at constant temperature potential difference
Where
Equivalent resistance of several resistors connected in series is
The terminal voltage of the given circuit is
The given emf is
The ratio of the measured terminal voltage to the emf for the given circuit is
Conclusion:
The ratio of the measured terminal voltage to the emf for the given circuit is
Want to see more full solutions like this?
Chapter 21 Solutions
COLLEGE PHYSICS (OER)
- suppose that each headlight of your car uses a 3 A and that you accidentally left the headlights on. how long will it take for a 12-V battery rated 80 A-hour to be fully discharged?arrow_forwardIn a 240 V circuit, how many 65 W light bulbs can you connect in parallel without tripping a 10-A circuit breaker?arrow_forwardkINDLY ANSWER THIS IMMEDIATELY, THANKYOU FOR HELPING OUT :) A storage battery has an emf of 25 V and an internal resistance of 0.200 ohm. Compute its terminal voltage a) when delivering 8.00 A and b) when it is being charged with 8.00 A CHOICES: A. 24.3 V, 25.5 V B. 23.4V, 26.6 V C. 42.3 V, 62.6 V D. 43.2 V, 52.5Varrow_forward
- When is a 1.5 V AAA battery not actually a 1.5 V battery? That is, when do its terminals provide a potential difference of less than 1.5 V?arrow_forwardSuppose a flashlight has 6.8 × 102 C of charge pass through it during time 0.35 h. A. What is the rate of the flashlight’s energy consumption, in watts, if it operates at a voltage of 3.00 V?arrow_forwardIf the 0.100-mm-diameter tungsten filament in a light bulb is to have a resistance of 0.200Ω at 20.0 °C , how long should it be?arrow_forward
- Check Your Understanding If you place a wire directly across the two terminal of a battery, effectively shorting out the terminals, the battery will begin to get hot. Wiry do you suppose this happens?arrow_forwardFor the two resistors shown in Figure 17.12, rank the currents at points a through f from largest to smallest. (a) Ia = Ib Ie = If Ic = Id (b) Ia= Ib Ic = Id Ie = If (c) Ie = If Ic = Id Ia = Ib Figure 17.12 (Quick Quiz 17.8)arrow_forwardConsider the circuit below. The battery has an emf of = 30.00 V and an internal resistance of r = 1,00 . (a) Find the equivalent resistance of the circuit and the current out of the battery. (b) Find the current through each resistor, (c) Find die potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.arrow_forward
- A high tension (HT) supply of, say, 6 kV must have a very large internal resistance. Why?arrow_forwardWhat is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 15.0 V while a current of 8.00 A is charging it?arrow_forwardSuppose you measure the terminal voltage of a 3.200-V lithium cell having an internal resistance of 5.00 Ω by placing a 1.00-kΩ voltmeter across its terminals. What current flows?arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning