Key relationship
Voltage: meter parallel; current: meter series; I=V/R. Continuity beep for R<50 Ω with source off.
Physics · Practical apparatus
Multimeter setup and reading
Meter function and connection must agree. Across-component voltage and series current are different measurements. Test continuity only in the source-off state, then compare a low resistance with an open component.
Open the interactive experiment →Multimeter setup and reading
மின்னழுத்தத்தை இணையாகவும் மின்னோட்டத்தைத் தொடராகவும் அளக்கவும். தொடர்ச்சிச் சோதனையில் மின்மூலம் அணைக்கப்பட வேண்டும்.
Key notes, relationships and model limits
Practical tip
Meter function and connection must agree. Across-component voltage and series current are different measurements. Test continuity only in the source-off state, then compare a low resistance with an open component.
Common trap
An open-circuit indication differs from a valid zero-current reading.
Model limits
Ideal meter; configuration errors displayed explicitly without simulating an instrument failure. Current-meter burden omitted. Continuity requires a disconnected virtual supply.
What you will learn
Match meter function and circuit connection.
Try the experiment
Try both scenarios, change one control, and predict the result before checking the graph and readouts.
Think of it this way
Change one input while keeping the others fixed, as you would in a controlled experiment.
Worked example
6 V across100 Ω gives6 V in voltage mode or60 mA in series current mode.
Why this matters
The model connects multimeter setup and reading with an observable reading. Check the equation and assumptions before applying it.
Before you start
SI units · algebra · graph reading
Check your understanding
An ideal voltmeter is connected?
- In series
- In parallel
- Only to the current port
Read the explanation
A voltmeter compares potential between two component terminals.
Course connection: Virtual apparatus preparation. Check exact board/exam membership in the syllabus sources. Physical practical work remains necessary.