Here is the waec physics practical answers 2021
Physics practical alternate B
1b(i). _The moment of a force is defined as the turning effect of the force about a pivot and is the product of the force (F) and the perpendicular distance (d) from the line of action of the force to the pivot._
1Bi) The moment of a force is a measure of its tendency to cause a body to rotate about a specific point or axis
Fig.3a
Use ruler to measure for di
Di= di x 5cm
Fig.3b
V1= 0.73v
V2= 0.94v
V3= 1.08v
V4= 1.15v
V5= 1.23v
V6= 1.26v
*Q3bi.*
Moving coil galvanometer is an electromagnetic device that can measure small values of current. It consists of:
1. Permanent horseshoe magnets
2. coil
3. Soft iron core
4. Pivoted spring
5. Non-metallic frame
6. scale and pointer.
Pick any four of them
Fig.2a
Use protractor to measure the angles starting from left
Fig.2b and 2c
Use ruler 📏 measure from left to right
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