Some psychological effects of laughter are: 

It is acceptable to use racial jokes in some situations. 

Physical effects of laughter are:

Humor can be used to cover up poor communication skills. 

Humor is a state of mind, mood and spirit.

Effects of humor in interpersonal relationships are: 

Laughter is important in personal and professional life. 

Laughter is natural laxative due to increase in peristalsis. 

i) Why is there a need for ‘Discharge termination voltage'?

ii) The term ‘Recommended discharge current: 1C 2.9A’  - What is it and what does it mean?  

iii) Suggest a reason why  'Measured energy (Wh)' (marked in yellow) decreases from left to right? 

iv) The term `PCB protection trip current (A)´ - What is it and why is it important?

A light drawing 4 watts will use approx. 2A current draw. 

• State

  the theoretical full runtime capacity (Wh) to the protection voltage.

• If the light can only maintain full brightness to 3.5v.

  Calculate the approx.' runtime when the light starts to fade.