9_Electrical current

Multiple Choice

A current 10 A flow from point A to point B. If its need time 1 minute. What is its charge?

• 600 C

• 500 C

• 100 C

• 700 C

Multiple Choice

A current 12A flow from point A to B with the charge 60C. What is its time?

• 5 sec

• 3 sec

• 4 sec

• 2 sec

Poll

Cell phone battery is one example of ....

• DC current

• AC Current

Measuring Current

Measuring Current

1. ​Current is measured using an ammeter

2. Ammeters should always be connected in series with the part of the circuit you wish to measure the current through

1. Typical ranges are 0.1-1.0 A and 1.0-5.0 A for analogue ammeter

2. Always read the meter from a position directly perpendicular to the scale
   
   

Analogue Ammeter

Digital ammeters can measure very small currents, in mA or µA

Digital displays show the measured values as digits and are more accurate than analogue displays

​Digital Ammeters

Open Ended

What is the measurement result?

Open Ended

What is the measurement result?