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 Yagyadutt Mishra's messages in the community 1 2 3 ... 97 98 99 GO Go to Page...
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 Discussion Forums -> This Post 15 points    (3    in 3 votes )   [?]

After the electricity was discovered scientist were well known about the fact that , electric energy is tranfered between two point in the form of electric current.So the whole scenario was like there are two points A and B , a simple wire is joining these two points , and suppose R is the resitance of this simple wire , and once we connect these two wires with a voltage source ( which is definitely the source of electric energy ) then an Electric current I suddenly starts flowing between the two points A and B..Refer this figure for a better analogy

So scientist were not so mad ( definitely they were not ) . Hence they started changing the value of R ( which is the resistance of wire ) , and they saw that when the value of R is increased then the amount of current flowing through the wire AB started decreasing.Now this is somewhat an interesting phenomenon that they have noticed on that time.

So Mr. Ohm came up with his own theory ( in fact he had started this experiment , arranging a simple wire between two points and varrying the resistance keeping Voltage constant )

# He noiticed that , when V is kept constant , then Increasing Resitance decreases the current in the network.
# He kept Resistance constant , and he noticed that Increasing the voltage increases the current in the network
( obviously current will be increased because voltage is nothing just a bag of electric energy and current is nothing just a carrier of this energy so once you started increasing the size of bag and the amoung of energy into it , current will atomatically increase )

So according to his experiment , he discovered a law , which says ...

Current in as circuit ,  I is directly proportion to the Voltage , and Inversely proportion to R

So he wrote => V = I * R or  I = V / R

P.S : Jitani kahani abhi tak banayi sab samjhane ke liye thi ,
point is simple ..Ohm's law says that Voltage in the network is directly proportional to the current and when you remove the proportionality symbol , a constant factor will be multiplied and that is R .

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

As it is clear by looking at the sequesnce that there is now change in numerator ..only denominator is decreasing with a common difference of 2 ..

So the 10th term can be imagined as  5/n
Where n is some number which we have to find out..

Since the denominator is generating a sequence  34 32 30 ..... which is in AP with common difference of -2
So n (which is 10th term) = a + 9 d ( a is first term and d is common difference)
Hence ... n = 34 -9(2)
hence n = 16

So the 10th term comes out to be = 5/16

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Write Complete question please
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

False !

Since 1 is in radian ...when u convert it into degree ...then 1 will be equal to 53 degree

and similarly ..2 will be equal to 106

So tan(1) = positive and tan(2) = negative

Therefore tan(1) > tan(2)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
A good Solution !
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Just a rough picture to show ...and proof that light is nothing but a wave carrying out infinte number of photons with it !
Carrying photons means ....light carry out its energy by packing it in photons ..!

(Just for fun ..when u go out on journey ...u pack your clothes in boxes ..That is what quantisation means ..! If each box has 10 clothes and you have arround 4 boxes...then total clothe u have is 40 ..!)

Similary Every light wave travels in a straight line with its energy packed in photons...! Number of photons determing how intense the light is ..!

Laser has very high intensity ..Means laser carry out large number of photons with  ..
Theory of Quantization says that ...Every wave has its energy quantized ..! Obviously In case of light what it is ??
Total sum of energy carried out by photons..!

If we have n photons ..total energy will be nhv ..! Where v is the frequency of the wave ..!
Now your point is that v is related to wave nature ...then why it determines the enrgy of photon which is of a particle nature ...

Answer is that ...the wave is nothing but collections of photons...as discussed ..So Energy of wave will be equally divided and distributed in the photons ..!

Quantum theory basically relate the wave nature with the particle nature :) ....So energy of wave can be given as total energy of photon....and one photon's energy can be determined by the wave's energy !

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
http://www.goiit.com/posts/list/integral-calculus-this-ques-is-from-rd-1121062.htm
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
http://www.goiit.com/posts/list/integral-calculus-this-ques-is-from-rd-1121062.htm
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
http://www.goiit.com/posts/list/integral-calculus-this-ques-is-from-rd-1121062.htm
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

--

Arrange the answer according to the option :)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Confuzzle ...!A person who is confused and puzzled at the same time ..! :D :D :D
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

I am CONFUZZLE

==================
Whether the function is  e(x^2)  or   (e^x)2

Because writing it as  e^x^2 has dual meaning ..! So a request to the owner of this post..please clarify it ..!

If it is
(e^x) ...then it is integrable as discussed by some of guys !
And answer can be caluclated by supposing e^x as t ..

But it it is
e(x^2)  then unfortunately it is considered to be as non-integrable function according to reimann integral theorem ...

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Arihant !
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Non integrable function :) --
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

It is basically very conceptual question !

(a)(a+1)(a+2)(a+3)(a+4)(a+5) = 720
(a)(a+1)(a+2)(a+3)(a+4)(a+5)=1X2X3X4X5X6     ( since 1X2X3X4X5X6=720 )

hence a = 1
And consecutive numbers equal to 1,2,3,4,5,6,

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

One mate has already answered  ... f(1) < 0

First of all lets write the co-efficients ..!

a = 1 , b = p  and c = q

SInce a > 0  the equation will open upward ...!

Hence for every x between root r1 and r2 ...the graph will have a negative value ..!
Given 1 lies between the root
So f(1) < 0

1 + p + q < 0

p+q < -1

And it will always be less than -1 ..never greater than -1 ..so please check out your question once again !

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Work is also termed as energy !

Work done = F.dx
Energy = F.dx

And if suppose u are in motion ...then your potential enrgy will decrease and kinetic energy will increase...!

Hence Energy = -dU ( Potential Energy)

So - dU = F.dx

Hence F = -dU/dx  ( - term is important ...)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Impulse is given as the force acting for a small duration of time ...!

Like when your head collides with the wall then ( just consider for how much time your head and wall are in contact ...hardly in 0.05 sec )

So even for this duration u will feel a heavy force on your head...This force is Impulse ...

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

If it is just |+1| then it will be a straight line parallel to the x-axis and cutting the y axis at (0,1)

or clarify the question once again

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