SPM Physics: Solar Energy

It is almost a year and a half since I 've been using  10 solars led lamp to lights up the outdoor area of my house. Each lamp is rated with 5W if it is fully charged by solar energy.

The lamp is using LDR in which it lighted up automatically when it is dark.

Usually it starts from 730pm and the battery will last up to 6.30am. 

So total hours for a day will be 11 hr.

Now lets calculate how much energy in kilowatt-hour is consumed a day for each lamp:

Total energy consumed a day by one solar LED lamp:

Energy,E = P x t

            E = 0.005kW x 11hr

            E = 0.055 kW hr 

Since I am using 10 lamp..so  total energy per day will be, 

            E = 10 x (0.055)

            E = 0.55 kWhr.

Imagine for a year in average will be 365 days..

So total energy used per year will be….  

           E =(365 days) x 0.55

           E = 200.75 kWhr.

Usually TNB's average rate for  1kWhr =RM0.218

So for a year, On average these 10 lamps should cost me… 

           RM0.218 x 200.75 = RM43.76

The best part is I don’t have to pay anything to TNB as I am using a free source of energy which is the solar energy from the sun.

Can u imagine if all our electrical appliances are powered by solar energy? How much money will be saved a year? The most important part is it is environmentally friendly.

 Let's fully utilize solar energy.

For those who would love to enquire my SPM physics home tuition or online tuition service, u can Whatsapp me @0172877589

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Chpter: Light+KBAT ( Bab: Cahaya)

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SPM Physics :2019 Results

Alhamdulillah.. yesterday SPM2019 candidates received their results. Some were happy, some were not..but i m sure most of them had given their best. 
Congratulations to those who get flying colors SPM result..as well as those who had made lots of improvement.

As for my physics home tuition students, last year's result looks encouraging. The majority have improved except one student didn't meet the expectation as she got B+ compared to A- for the trial. The good news is the lowest grade for physics among my students is B. ..the rest is a mix of A-, A & A+...
Anyway congratulations again to all SPM2019 candidates and kudos too to all the school teachers for your contributions.

Here some example testimony of my student results:

if u are looking for SPM physics online home tuition contact us at 0172877589

How To Grab an 'A' in SPM Physics Paper( Part 1)

Here some tips for u to work out in order to grab an A in physics paper for SPM:

1. GRAB THE BASIC DEFINITION:
Specific heat capacity, Pessure, Power, Current, etc..eventhough it only contributes 1 mark..once u 've understood the definition it is easier to explore the whole concept in details.

2. GRAB THE PHYSICS PRINCIPLE & THEIR APPLICATION
Pascal's application:         Hydraulic system, 
Archimedes's application: Hot air balloon, Hydrometer, submarine , 
Bernoulli's application:      Aerofoil, bunsen burner 
Please do not ignore the application part..go through as many as u can...favorate for paper 1 & paper 2.

3. GRAB THE PHYSICS LAW & IT's APPLICATION
Hooke’s Law Newton 1st & 2nd law of Motion,Boyle’s Law
Charles’s Law,Pressure Law Law Of Reflection
Snell’s Law Law Of Refraction
Ohm’s Law Faraday ‘s Law,Lenz’s Law
If u can understand each of these laws it will help u answering paper1,2 & 3 with confidence.

4. GRAB THE FORMULA

Identify the formula which is given and not given in the exam. Use them not only for calculation but learn how to relate the quantities in the formula..e.g P=F/A..larger area produce lower pressure.

5.GRAB ALL THE EXPERIMENT
Learn to do short & simple procedure & draw its apparatus arrangement..& the most important is to grab the correct MV & RV.

6. GRAB THE GRAPH SKILL
Know how to interpret the graph gradient and relate it with maths equation y=mx+c

7. GRAB SPM PASS QUESTIONS
There's no other way except practice will make u perfect. Perhaps by doing 10 questions a day will take your lower grades away.

Prepaded by :

Cikgu Ahmad

SPM Physics Home Tutor.

SPM Physics online Tutor