Interested to Buy Any Domain ? << Click Here >> for more details...
A wire of resistance 10 ohms is drawn out to three times its
original length. The new resistance will be
(1) 90 ohm
(2) 10 ohm
(3) 30 ohm
(4) 120 ohm
- 6 Answers
- 14794 Views
- I also Faced
- E-Mail Answers
Answer Posted / harsh dubey
R=RHO*L/A
MULTIPLY AND DIVIDE BY L
R=RHO*L*L/A*L
AS RHO AND VOLUME(A*L)IS CONSTT.
SO
WE HAVE,
R2/R1=square of (L2/L1)
as increased by 3 times,putting L1=3L2
WE HAVE,
R2=9R1
OR
R2=square of (n)*r........
so correct answer is=90ohm
| Is This Answer Correct ? | 8 Yes | 2 No |
Post New Answer View All Answers
Dear sir, This is my kind request can i get rrb section engineer(mechanical) model question paper for the past2 years nd syllabus.pls message me or contact me in the below mail id rajesh.miracle@gmail.com pls sir this is my hummbel request.
friends anyone send me the model question paper for RRB- (s&t) to this email id-jeevairtt@gmail.com
rrb bhopal loco pilot previous year question
i have applied for post of ticket examiner which books i must prefer for my exams.. which type of notes i can make for my exams what strategy i should make.
group d second selected list out date give me detail. roll.no.:-17437316
sir i am selected as a bank clerk and i want leave for MBA 3rd sem exam should i will get leave for EXAM. tell me the process to get leave?
PLS provide me latest quest. and answ. for RRB exam of J E (Electronics)
hi this is chandra. I have to attend an interview for the post of asst. supervisor (IT) in IRCTC on 22nd june in delhi. I dont have any idea about the questions they can ask. Please if anyone can give some hint about this, post it here.. sincely thanks
Can anyone send me sample technical test for the post Junior HR Assistant or Personnel Assistant?
please send me aptitude as well as technical questions of rrb bangalore with answers for je tele category
i need previous year questions for section engineer(S&T) for electronics engineer. please send some sample questions to my mail id deepaselvarengan@gmail.com Thanks in advance !
please send me the question paper and syllabus for asst station master post
sir,plz send me a old papers for section engineer. thanking you
hai guys i completed my bsc and i applied already ASSISTANT STATION MASTER POST... PLS tell the process of selection of asst stn mstr? 1st written test exm and next.......? and syllabus for written test?
pls provide me general ability quest & answ of RRB exams for JE (Electronics).
