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Evan Toh
Aug 310 min read
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Evan Toh
Aug 312 min read
Simple electric circuit set up - with reistance wire on ruler
This simple circuit involves a resistance wire on the meter rule and the use of jockey tapping at different length L on the resistance...
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Evan Toh
Aug 311 min read
How to connect the variable resistor (rheostat)
The variable resistor (rheostat) is a device to control the size of the current by adjusting the resistance on the variable resistor ....
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Evan Toh
Aug 311 min read
Setting up the electrical circuit and Finding unknown resistor R
Refer to the video below for the setting up of the apparatus. Why do you need a variable resistor (rheostat)? Without the variable...
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Evan Toh
Aug 310 min read
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Evan Toh
Jan 311 min read
PP2017Q11 Using P=I^2R and P=V^2/R to explain which has higher power
Resistors may be connected in series or parallel. When asked which resistor has higher power (hence higher energy), in general we will...
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Evan Toh
Jan 11 min read
Understanding cathode-ray oscilloscope CRO
Refer to the notes below together with the video to learn more about the CRO Videos
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Evan Toh
Jan 10 min read
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Evan Toh
Jan 11 min read
Graphs of Transverse Wave
Transverse waves are waves in which travel perpendicular to the direction of vibration of particles.
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Evan Toh
Jan 11 min read
Ticker Tape Timer
Ticker tape timer is a device which punches dots on a tape at specific time interval. The tape can be attached to a moving object. With...
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Evan Toh
Jan 11 min read
Bowling ball and feather in a vacuum room – which drops faster?
In a vacuum room, where is no air resistance, the bowling ball will have the same acceleration as the feather, which is 10 m/s2 on earth....
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Evan Toh
Jan 11 min read
Common SI prefixes
Physical Quantity is a quantity that can be measured and it consists of a numerical magnitude (size) and a unit . (e.g. 5m where 5 is...
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