ICSE − Q & A

I'm not able to understand the 14th question in examples before the exercise 12 (B) of thermionic emission and radioactivity.

+ 1 more questions by shivaanee22  

Why are slip rings used in ac generator??
asked by Shivaanee sharma (shivaanee22) 8 years ago
2

The hammer of an electric strikes 1440 times in a minute and does a work of 0.2J per strike. What is the power of hammer in SI system

http://www.respaper.com/tedgreen/792/9641-pdf.html?cmd=conv http://www.respaper.com/tedgreen/792/8351-pdf.html?cmd=conv
http://www.respaper.com/tedgreen/792/8786-pdf.html?cmd=conv
guys check this paper... idk why it came as 3 separate papers some problem w my phone

Is wave velocity a scalar or vector?

When we have to cal the current through a resistor in series should we take only the value of the resistor or of the whole circuit?

Please someone upload ICSE Analysis of Pupil's Performance 2016 . I cannot download it. Pls upload it or send a screenshot.

What is the difference between right hand thumb rule and right hand grip rule? Or is it the same?

Any place or website where I can find all definitions in one place?

1.In mountains,pressure is generally used for cooking,why?
2.Why is water chosen to be circulated in black painted pipes in a solar concentrator?

State the functions of two main parts of an ac generator? pls help!!