Warm up set 7 Question Answer:

Slides:

Advertisements

Similar presentations

Circuits Electromotive Force Work, Energy and emf

Advertisements

Electricity Technical Stuff. Electric Field An uneven distribution of charge produces an “ Electric Field” We can deduce this by an electric potential.

Ohm’s Law Objective: TSW understand the concepts of Voltage, Current, and Resistance by developing and applying Ohm’s Law.

Physics 121 Practice Problem Solutions 07 Current and Resistance

TOC 1 Physics 212 and 222 Circuit Elements and Electric Power Resistors Capacitors Inductors.

Fundamentals of Circuits: Direct Current (DC)

DC circuits Physics Department, New York City College of Technology.

Current, Ohm’s Law, Etc. The Continuity Equation for Steady State Currents Currents and current densities are constant in time – steady state. The flux.

Chapter 26 DC Circuits. I Junction rule: The sum of currents entering a junction equals the sum of the currents leaving it Kirchhoff’s Rules.

Lesson 6 Direct Current Circuits  Electro Motive Force  Internal Resistance  Resistors in Series and Parallel  Kirchoffs Rules.

AP Physics C: E&M. DC: Direct current. A constantly applied voltage causes charged particles to drift in one direction.

Circuits Series and Parallel. Series Circuits Example: A 6.00 Ω resistor and a 3.00 Ω resistor are connected in series with a 12.0 V battery. Determine.

Current, Resistance, and Electromotive Force

Electric current and direct-current circuits A flow of electric charge is called an electric current.

CLASS :- X MADE BY :- MANAS MAHAJAN

Lecture 2 Basic Circuit Laws

Direct Current When the current in a circuit has a constant direction, the current is called direct current Most of the circuits analyzed will be assumed.

Current and Resistance

Direct Current Circuits Electrolytes are solutions that can transfer charge from electrodes (dissimilar materials). A potential difference (V) will exist.

Current Electricity and Elastic Properties. Contents Current Electricity Current Electricity –Ohm’s Law, Resistance and Resistivity –Energy Transfer in.

Electricity Define electric potential difference Determine the change in potential energy when a charge moves between two points at different.

Lecture 13 Direct Current Circuits

Direct Current And Resistance Electric Current The Battery Resistance And Ohm’s Law Power Internal Resistance Resistors In Combination RC Circuits Written.

Basic Electric Circuits. A series connection has a single path from the battery, through each circuit element in turn, then back to the battery. Resistors.

Current, Resistance and Power

a b  R C I I R  R I I r V Yesterday Ohm’s Law V=IR Ohm’s law isn’t a true law but a good approximation for typical electrical circuit materials Resistivity.

AP Physics C Electric Circuits III.C. III.C.1 Current, Resistance and Power.

Series Circuits EE 2010: Fundamentals of Electric Circuits Mujahed AlDhaifallah.

Electric Circuit Charges in Motion OCHS Physics Ms. Henry.

EXAMPLE 27.1: A copper wire carries a current of 10 A. It has a cross- sectional area of 0.05 cm 2. Estimate the drift velocity of the electrons.

Current Electricity Electric Current Circuit – continuous conducting path between terminals of a battery (or other source of EMF) Electric Current.

Electric Circuits Series and Parallel Circuits. Light a bulb  You are given: Wires, a bulb and a battery. Your job is to: Light the bulb.

Series wiring means that the devices are connected in such a way that there is the same electric current through each device. One loop only for the flow.

Lecture 11-1 Electric Current Current = charges in motion Magnitude rate at which net positive charges move across a cross sectional surface Units: [I]

Current of Electricity Electric Current Potential Difference Resistance and Resistivity Electromotive Force.

Chapter 20 Electric Current and Resistance. Units of Chapter 20 Batteries and Direct Current Current and Drift Velocity Resistance and Ohm’s Law Electric.

Lecture 7 Circuits Chp. 28 Cartoon -Kirchoff’s Laws Opening Demo- transmission lines Physlet Topics –Direct Current Circuits –Kirchoff’s Two Rules –Analysis.

A. their drift speed increases. B. their drift speed decreases. C. their drift speed stays the same. D. not enough information given to decide Q25.1 Two.

Exam 2: Review Session CH 25–28

Chapter 20 Electric Circuits Electromotive Force and Current Within a battery, a chemical reaction occurs that transfers electrons from one terminal.

19-2 EMF and Terminal Voltage A battery or generator, or other electrical energy creation device, is called the seat or source of electromotive force,

Physics 212 Lecture 9, Slide 1 Physics 212 Lecture 9 Today's Concept: Electric Current Ohm’s Law & resistors Resistors in circuits Power in circuits.

Electric Current and Circuits. Current Affairs... Defining Current Current Density and Conductivity Drift Velocity - an application of ideas.

Electric Circuits Review Chapters 17 & 18 Electrical resistance in a wire depends on the wire’s 1. Resistivity 2. Length 3. Cross sectional area 4. All.

Physics Section 18.2 Apply series and parallel circuits. Note: A simple circuit may contain only one load. A more complex circuit may contain numerous.

1© Manhattan Press (H.K.) Ltd Potentiometer Comparing resistances Measuring the e.m.f. of a cell Measuring the internal resistance of a cell.

CURRENT, RESISTANCE, AND ELECTROMOTIVE FORCE Chapter 4.

Physics Section 17.3 Apply the properties of electric current Electric current is the rate at which charge flows through a conductor. The charges can be.

Parallel Circuits Aim: How does a circuit with multiple loops affect voltage, current and resistance?

Chapter 26 DC Circuits. I 26-3 Kirchhoff’s Rules Example 26-9: Using Kirchhoff’s rules. Calculate the currents I 1, I 2, and I 3 in the three branches.

Current = charges in motion

Voltage current resistance All Scalar quantities.

Do Now: Which resistor takes a larger current through it?

Current Electricity and Elastic Properties

Warm up set 7 Question (a) where a wire is connected to a battery

Fundamentals of Circuits

Internal Resistance in EMF

Electricity and Magnetism

Current and Resistance

Current and Direct Current Circuits

FIGURE 6-1 The amount of current flowing into junction point A equals the total amount of current flowing out of the junction.

C H A P T E R 20 Electric Circuits

FIGURE 6-1 The amount of current flowing into junction point A equals the total amount of current flowing out of the junction.

Current Electricity and Elastic Properties

CIRCUITS Current Resistance Ohms Law Power Series Circuits

Current and Simple Circuits Voltage Resistance Safety

Electric Circuits Chapter 35.

A. their drift speed increases. B. their drift speed decreases.

Chapter 28 Problems 2,6,8,9,15,20,21,36,40.

Presentation transcript:

Warm up set 7 Question Answer: 1.HRW6 28.TB.05. [119859] In the context of the loop and junctions rules for electrical circuits a junction is: (a) where a wire is connected to a battery (b) where three or more wires are joined (c) where a wire is bent (d) where a wire is connected to a resistor (e) where only two wires are joined Answer: (b) Where three or more wires are joined

Question Answer: (a) the electric field 2. HRW6 28.TB.18. [119872] Two wires made of the same material have the same length but different diameter. They are connected in parallel to one end of a battery. The quantity that is NOT the same for the wires is: (a) the electric field (b) the electron drift velocity (c) the current (d) the current density (e) the end-to-end potential difference Answer: (c) The current density In effect, these two wires are resistors, with the resistance inversely proportional to the cross sectional area of the wire. Resistors is parallel divide the current, but the potential across each is equal. V=IR If V is kept constant, but the resistance R of the two wires is different, then current I must change.

Question 3. HRW6 28.TB.26. [119880] The emf of a battery is equal to its terminal potential difference: (a) only when there is no current in the battery (b) only when a large current is in the battery (c) under all conditions (d) under no conditions (e) only when the battery is being charged Answer: (d) Only when there is no current in the battery