Electrical Circuits Overview
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

The cell stores chemical energy and transfers it to ______ energy when a circuit is connected.

electrical

When two or more cells are connected together we call this a ______.

battery

An electric current is a flow of microscopic particles called ______ flowing through wires and components.

electrons

Electric current flows from the Negative terminal to the ______ terminal of a cell.

<p>Positive</p> Signup and view all the answers

Electric potential is measured in ______.

<p>VOLTS</p> Signup and view all the answers

Electric resistance is measured in ______.

<p>OHMS</p> Signup and view all the answers

The voltage across the total circuit on any portion of the circuit is equal to the current times the ______.

<p>resistance</p> Signup and view all the answers

In a series circuit, components are connected end-to-end, one after the ______.

<p>other</p> Signup and view all the answers

The ‘electrical push’ which the cell gives to the current is called the ______.

<p>voltage</p> Signup and view all the answers

Voltage is measured in ______ (V) on a voltmeter.

<p>volts</p> Signup and view all the answers

The bigger the voltage supplied by the cell, the bigger the ______.

<p>current</p> Signup and view all the answers

Unlike an ammeter, a voltmeter is connected ______ the components.

<p>across</p> Signup and view all the answers

Scientists usually use the term ______ (pd) when they talk about voltage.

<p>Potential Difference</p> Signup and view all the answers

In a series circuit, voltage is ______ between the components.

<p>shared</p> Signup and view all the answers

In a parallel circuit, voltage is the ______ in all parts of the circuit.

<p>same</p> Signup and view all the answers

If you have a series circuit with two resistors, each with equal resistance and a 6V source, the voltage drop across each resistor will be ______V.

<p>3</p> Signup and view all the answers

In a series circuit, if one bulb 'blows', it breaks the whole ______ and all the bulbs go out.

<p>circuit</p> Signup and view all the answers

In a series circuit, the total resistance is equal to the sum of the individual ______.

<p>resistance</p> Signup and view all the answers

In a series circuit, the ______ through each circuit element is the same.

<p>current</p> Signup and view all the answers

In a parallel circuit, components are connected side by ______.

<p>side</p> Signup and view all the answers

In a parallel circuit, the ______ has a choice of routes.

<p>current</p> Signup and view all the answers

In a parallel circuit, if one bulb ‘blows’ there will still be a complete circuit to the other ______.

<p>bulb</p> Signup and view all the answers

Electric current is measured in ______ using an ammeter.

<p>amps</p> Signup and view all the answers

An ammeter is connected in ______ in the circuit.

<p>series</p> Signup and view all the answers

Flashcards

What is electrical potential?

The force that pushes electrons through a circuit.

What is electric current?

The flow of electrons through a circuit.

What is a cell?

A device that stores chemical energy and converts it to electrical energy.

What is a battery?

A collection of cells connected together to produce a larger electrical potential.

Signup and view all the flashcards

What is electrical resistance?

The opposition to the flow of current in a circuit.

Signup and view all the flashcards

What is a series circuit?

A circuit where components are connected in a single loop, one after the other.

Signup and view all the flashcards

What is a parallel circuit?

A circuit where components are connected in separate branches, allowing current to flow through multiple paths.

Signup and view all the flashcards

Voltage

The electrical force that pushes electrons through a circuit.

Signup and view all the flashcards

Volt (V)

The unit of measurement for voltage.

Signup and view all the flashcards

Voltmeter

A device used to measure voltage in a circuit. It is connected in parallel across the component.

Signup and view all the flashcards

Voltage and Cells

The stronger the cell (battery) the higher the voltage.

Signup and view all the flashcards

Voltage in Series Circuits

In a series circuit, the voltage is shared between the components.

Signup and view all the flashcards

Voltage in Parallel Circuits

In a parallel circuit, the voltage is the same across all components.

Signup and view all the flashcards

Current

The amount of electrical charge flowing through a circuit per unit of time.

Signup and view all the flashcards

Ampere (A)

The unit of measurement for current.

Signup and view all the flashcards

Total Resistance in Series Circuit

In a series circuit, the total resistance is calculated by adding the individual resistances of each component.

Signup and view all the flashcards

Current in Series Circuit

In a series circuit, the current flowing through each component is the same, and it's equal to the total current in the circuit.

Signup and view all the flashcards

Total Current in Parallel Circuit

In a parallel circuit, the total current is the sum of the currents flowing through each branch.

Signup and view all the flashcards

Total Resistance in Parallel Circuit

In a parallel circuit, the total resistance is calculated by taking the inverse of the sum of the reciprocals of each individual resistance.

Signup and view all the flashcards

What does an ammeter measure?

An ammeter measures electric current, which is the flow of electric charge through a circuit.

Signup and view all the flashcards

How is an ammeter connected in a circuit?

An ammeter is connected in series in a circuit to measure the current flowing through it.

Signup and view all the flashcards

Study Notes

Electrical Circuits

  • Electrical circuits are pathways for electrical current to flow.
  • A simple circuit typically includes a cell (or battery), a lamp, a switch, and connecting wires.
  • Components are joined together by metal wires.

The Cell

  • A cell stores chemical energy and converts it to electrical energy when a circuit is connected.
  • Multiple cells linked together form a battery.
  • The cell's chemical energy is used to drive the current.

Electric Current

  • Electric current is the flow of electrons through wires and components.
  • Electrons flow from the negative terminal to the positive terminal of a cell.

Units of Measurement

  • Electric current is measured in amperes (amps).
  • Electric potential is measured in volts.
  • Electric resistance is measured in ohms.

Ohm's Law

  • Ohm's Law states that the voltage (V) across a component equals the current (I) multiplied by the resistance (R).
    • V = IR

Simple Circuits

  • A closed switch creates a continuous path for the current flow.
  • An open switch breaks the circuit, preventing current flow.

Circuit Diagrams

  • Scientists use standardized symbols to represent circuit components in diagrams.
    • Examples of symbols include: cells, batteries, switches, lamps, buzzers, ammeters, voltmeters, motors, resistors, and variable resistors.

Types of Circuits

  • Series Circuits: Components are connected end-to-end, forming a single loop.

    • If one component fails, the entire circuit is broken.
    • The current is the same throughout the circuit.
    • The total resistance is the sum of the individual resistances.
    • The total voltage is the sum of the individual voltages.

  • Parallel Circuits: Components are connected side-by-side.

    • If one component fails, the remaining components can still function.
    • The current is divided among the branches.
    • The voltage is the same across each branch.
    • The reciprocal of the total resistance equals the sum of the reciprocals of the individual resistances.

Measuring Current

  • Current is measured using an ammeter connected in series with the circuit.
    • In series circuits, the same current flows through all components.
    • In parallel circuits, the total current flowing into a junction equals the sum of the currents flowing out of the junction.

Measuring Voltage

  • Voltage is measured using a voltmeter connected in parallel across the components.
    • In series circuits, the voltage is divided among components.
    • In parallel circuits voltage is the same across all components.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Electric Circuits PDF

Description

This quiz covers the fundamental concepts of electrical circuits, including components like cells, switches, and lamps. It also explains electric current, measurements in amperes, volts, ohms, and the application of Ohm's Law. Test your understanding of how these elements interact to form a complete circuit.

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser