Evan Toh
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Evan Toh
Nov 41 min read
How induced current is produced when magnet is inserted into a solenoid
According to Fraraday's Law, the magnitude of the induced emg, hence induced current, is directly proportional to the rate of change of...
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Evan Toh
Oct 221 min read
2016PPP1Q40 – Voltage and Power of Bulb Y when X is switched off - 2013PPP1Q40 heaters
2016PPP1Q40 Solutions: Option C [There is another similar question in 2013 Nov Pure Physics P1Q40. The answer is Option C too. Refer to...
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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
Nov 30, 20231 min read
Coppers Surprising Reaction to Strong Magnets Force Field Motion Dampening
If the circuit is open, i.e. there two ends of the solenoid is open, there is induced emf produced, but no induced current produced. That...
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