A spherical silver electrode of radius 8cm is concentric with a spherical metal shell of radius 10cm. The inter space contains an insulating material

Monjur Alahi

A spherical silver electrode of radius 8cm is concentric with a spherical metal shell of radius 10cm. The inter space contains an insulating material of resistivity `10^(6)Omega`m. Compute the resistance of the insulator.
[Hint: Resistance of a shell of radius z = `rho(dz)/(4piz^(2)`. Integrate from z = 8 to z=100


0 like 0 dislike
3 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - `1.99 xx 10^(5)Omega`

0 like 0 dislike
3 views
Talk Doctor Online in Bissoy App
A sphere of radius R and made of material of relative density `sigma` has a concentric cavit of radius r. It just floats when placed in a tank full of

Correct Answer - A `B=W" " implies(4)/(3)piR^(3) xx 1 xx g =(4)/(3)pi(R^(3)-r^(3))sigma g` `R^(3)=sigmaR^(3)-sigmar^(3)" "impliessigmar^(3)=(sigma-1)R^(3)" "implies(R )/(r )=((sigma)/(sigma-1))^(1//3)`

2 Answers 1 views
Calculate the electrode potential at a copper electrode dipped in a 0.1 M solution of copper sulphate at `25^(@)C`. The standard electrode potential o

We know that, `E_("red")=E_("red")^(@)+0.0591/n log_(10) ["ion"]` Putting the value of `E_("red")^(@)=0.34 V, n=2` and `[Cu^(2+)]=0.1 M` `E_("red")=0.34+0.0591/2 log_(10) [0.1]` `=0.34+0.02955xx(-1)` `=0.34-0.02955=0.31045` volt

2 Answers 1 views
What is the single electrode potential of a half-cell for zinc electrode dipping in 0.01 M `ZnSO_(4)` solution at `25^(@)C` ? The standard electrode p

We know that, `E_(o x)=E_(o x)^(@)-0.0591/n log_(10) ["ion"]` Putting the value of `E_(o x)^(@)=0.763 V, n=2` and `[Zn^(2+)]=0.01 M`, `E_(o x)=0.763-0.0591/2 log_(10) [0.01]` `=0.763-0.02955xx(-2)` `=(0.763+0.0591)` volt `=0.8221` volt

2 Answers 1 views
A certain metal salt solution is electrolysed in series with a silver coulometer. The weights of silver ad the metal deposited are 0.5094 g and 0.2653

Correct Answer - 2 `(W_(Ag))/(W_("metal"))=(E_(Ag))/(E_(M))=(108)/((108)/(n))=n` `n=(0.5094)/(0.2653)=1.92` `n=2`.

2 Answers 1 views
A conducting sphere of radius R carries a charge Q. It is enclosed by another concentric spherical shell of radius 2R. Charge from the inner sphere is

Correct Answer - `-(Q^(2))/(16pi in_(0)R)`

2 Answers 1 views
Two concentric spherical shells of conducting material and of radii a and b `(bgta)` are given charges `q_(1) " and " q_(2)`, respectively. Find the p

Correct Answer - `(i) (q_9)+q_(2))(/(4piepsi_(0)r), (ii) (1)/(4piepsi_(0))((q_(1))/(r)+(q_(2))/(b))(iii) (q_(1))/(4piepsi_90))((1)/(a)-(1)/(b))` (iv) they will acquire a common potential

2 Answers 1 views
Electric charge q is uniformly distributed in a spherical space from which a cavity of diameter equal to the radius R of the spherical space has been

Correct Answer - `(1)/(4piepsilon_(0))(4q)/(qR^(2))((5)/(2)R-r),(q)/(7piepsilon_(0))`

2 Answers 1 views
A spoon having `10cm ^(2)` area is to be electroplated with silver .Calcalate the thick - ness of silver coating when a currect of 0.12 A is passed fo

Correct Answer - 0.22 cm

2 Answers 1 views
(a) Find the capacitance of spherical capacitor having concentric shells of radii a `a` and `b (bgta)`. The space between the shells is completely fil

Correct Answer - `C=4piepsilon_(0)k((ab)/(b-a))`; (b) ` (k abc)/(ka(b-c)+b(c-a))`

2 Answers 1 views
Calculate the capacitance of a spherical capacitor consisting of two concentric spheres of radil 0.50m, 0.60m. The material filled in the space betwee

Correct Answer - `2xx10^(-9)F`

2 Answers 1 views
X