Back to Course

SS1: PHYSICS – 3RD TERM

0% Complete
0/0 Steps
  1. Production of Electric Current | Week 1
    6 Topics
    |
    1 Quiz
  2. Electric Current | Week 2
    5 Topics
    |
    1 Quiz
  3. Electrical Resistance of a Conductor | Week 3
    5 Topics
    |
    1 Quiz
  4. Particulate Nature of Matter | Week 4
    5 Topics
    |
    1 Quiz
  5. Crystalline and Non-crystalline Substances | Week 5
    3 Topics
    |
    1 Quiz
  6. Elastic Properties of Solids | Week 6 & 7
    4 Topics
    |
    1 Quiz
  7. Fluids at Rest & in Motion | Week 8 & 9
    6 Topics
    |
    1 Quiz
  8. Solar Collector
    3 Topics
    |
    1 Quiz



  • Do you like this content?

  • Follow us

Lesson Progress
0% Complete

Components that are commonly found in Electric Circuit:

An electric circuit usually comprises of the battery (cell) which is the source of electric energy, a key or switch to start or stop current flow, an ammeter to measure current, voltmeter to measure potential difference, a resistor and rheostat to vary the current.

These components are connected as shown in the image below;

Electric circuit
Electric circuit.

Ammeter: An ammeter is used to measure the current flowing in a circuit. It has a small resistance. It is connected in series in the circuit so that the current it will measure should flow through it.

Voltmeter: A voltmeter is used to measure the voltage or potential difference across a component in a circuit. It has a large resistance. It is connected in parallel across the component whose voltage drop is to be determined. It takes in negligible amount of current.

Resistor: A resistor is an electrical component that opposes the flow of electric current through itself. 

Galvanometer: A galvanometer is a device that is used to detect small electric current or measure its magnitude.

Cell: A cell pushes the electric current from the positive terminal round to the negative one. This is the way that conventional current flows.

Open key switch: The switch or key helps to make or break the circuit, i.e. switches on or switches off the current.

Rheostat: The rheostat is a variable resistor used to control electric current by increasing or decreasing the resistance manually.

12100 e1653805469899
Rheostat.

Symbols used in Electricity:

elec symbols
Electrical Circuit Symbols.

Responses

Your email address will not be published. Required fields are marked *

error: