Which of the following is the best conductor of electricity ?
(a) Copper
(b) Aluminium
(c) Gold
(d) Silver
Answer Posted / bhunesh
(D) Silver
because
1) Very Low Resistivity 15.9 nΩ m.
2) Silver and Gold are the only metals, being found in a pure form from the earth.
3) silver is a good conductor of electricity like many other metals because the atoms that make up a piece of silver will have many free electrons that can be moved by applying voltage across it. These moving electrons are known as an electric current and they are necessary for making electrical and electronic equipment work correctly.
metals ρ (Low Resistivity in nΩ m)
Silver 15.9
copper 17.1
gold 22.1
aluminum26.5
tungsten52.8
zinc 59
brass 64
nickel 69.3
lithium 92.8
iron 96.1
platinum105
palladium105.4
tin (0 ℃)115
chromium126
tantalum131
solder 150
steel, plain180
lead 208
uranium (0 ℃) 280
titanium (0 ℃) 390
steel, stainless720
mercury (0 ℃) 941
plutonium 1414
manganese 1440
nichrome 1500
Is This Answer Correct ? | 25 Yes | 3 No |
Post New Answer View All Answers
asst-loco master
I am preparing for RRB (KOLKATA) Goods Guard Exam. Please send me the previous Question papers
sir i applied for loco pilot, goods guard, assistant station master and electrical section engineer posts.can you sent me the old question papers and syllabus of the examination to the email jerinjosephm@gmail.com
Sir, please send me solved question paper for section and junior engineer(electrical)
i m just 10th pass ! can u plz tall me
plz send me some question papers for reference
sir please iwant to rrb health inspector examination privious papers
i need syllabus and previous year question papers for rrb section engineer in s&t department
Dear sir/Madam my question is, could you get me a sample paper of RRB aptitude test of last three year
where can we search the previous question papers for station master,ticket collector,goods gaurds...plz mention book name.
Sir, I am Diploma in Mechanical Engineer holder and I have been applied RRB-Chennai now. I need RRB chennai JE mechanical last 5 year question papers Plz send me on this email id gunacpt@gmail.com
please send chennai rrb je question papers please send urgently
sir ,iam an B.Tech ece student applied for the post of section engineer(signal)2010 and i want to know the previous questions of this examination.so sir,please forward the model papers of the above mentioned categorie to my mail id:shriragini.k@gmail.com
Dear Friends, I need syllabus & last three years questions paper for section engg(Electrical/Electronic),please send to below mail id-m84.anand@gmail.com
what is written on you t_shirt back side