1ok next................
What is d remainder when x= 1!+2!+3!....100! is divided by 264???
Simple HCV probs...........
1. A thin, metallic spherical shell contains a charge Q on it. A point charge q is placed at the centre of d shell and another charge q1 is placed outside it as shown in d fig. All d three charges are positive. The force on d charge at d centre is....
a) Towards left b) Towards right c)Upward d) Zero
The force on d central charge due to d shell is
a) Towards left b) Towards right c)Upward d) Zero
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61 Answers
11guys d first one.....................
solve it ill post more simple HCV questions..... [3][3][3][3][24]
13.
please sum1 tell me this..........
A thin metallic plate is inserted between d plates of a capacitor as shown. The capacitance now becomes
a) C/2 b)2C c) 0 d)∞
14.
Two metal spheres of capacitances C1 and C2 carry some charges. They are put in contact and then separated. The final charges Q1 and Q2 on them will satisfy.
a) Q1/Q2<C1/C2 b)Q1/Q2=C1/C2 c)Q1/Q2>C1/C2
d) Q1/Q2=C2/C1
392nd one is easy. the vertical capacitor will not have any charge as both the ends are at the same potential. so only 2 are left. both are in parallel. that makes 2c.
1yup ........4 is b..............expalnation.................
and 2nd ya even i was confused at first thts y i had asked this....d options are correct if HCV is correct..
39http://targetiit.com/iit_jee_forum/posts/capacitors_2536.html
i think this should explain the third one well.
1b555........widout dielectrics here we shud take K1=K2 and proceed thts all naa??..................ans is infinity.......
14)
let V1=Q1/C1
V2=Q2/C2
WEN THEY R IN CONTACT D POTENTIAL IS EQUAL
SO Q1/C1=Q2/C2
ON REARRANGIN WE GET B)
d charges remain same even after d contact is removed..
394th one is b because they come to same potential when put into contact
14th one .............. check ur ans...........
let me also check ma ans..
39sry edited, answer was b. i didnt see options correctly. anyways only b comes wehn we say potential is same.
1ok first................i got sum answer as i had used logic........but i was totally wrong.........sp please explain it to me ......SUM1 plzzzzzzzz
39if i am not wrong, all the charge put inside a shell comes to its surface.
1check dis whether u r sayin dis....
http://targetiit.com/iit_jee_forum/posts/skin_effect_4202.html
1ya ramku almost d same..................but what he is sayin is that ther wudnt be anything inside d shell(thts y d field is zero)..........
yess b555 do continue.......