Derive the expression for the self inductance of a long solenoid of cross sectional area A and length l, having n turns per unit length.

Self-incompatibility is a genetic mechanism in angiosperms that prevents self-pollination. It develops genetic incompatibility between individuals of the same species or between individuals of different species. The plants which exhibit...

Number of turns in the solenoid, n = 800 Area of cross-section, A = 2.5 × 10−4 m2 Current in the solenoid, I = 3.0 A A current-carrying solenoid behaves as a bar...

Length of wire  L= 3 m,  Load F = 10*10 N =100 N, {taking g = 10 m/s²}  Area of cross-section A = 4 mm²  →A = 4x10⁻⁶ m²  (a) The stress = Load...

(a) Since both types of wires are joined end to end, the same load will be on the cross-sections of them. If the load = F and the area of...

Length of the rod =L =2 m  The length increased during the night = l =0.1 cm= 0.001 m  The strain developed during the night =l/L =0.001/2 =0.0005  If the tension developed =...

Cross-sectional area A =0.01 cm²   →A = 0.01/10000 =1x10⁻⁶ m²  Stress = 20/1x10⁻⁶ N/m² =2x10⁷ N/m²  Hence the longitudinal strain =Stress/Y =2x10⁷/1.1x10¹¹  =1.82x10⁻⁴  Poisson's ratio = 0.32  Lateral strain = 0.32*1.82x10⁻⁴ =5.82x10⁻⁵  Taking the cross-section as...

K = 45w/m-°C ℓ = 60cm = 60 × 10–2m A = 0.2cm2 = 0.2 × 10–4m2 Rate of heat flow, = KA( θ1 + θ2 )/l = (45 x 0.2 x 10-4 x...

Given. Percentage fall in demand = 20 Initial Price= Rs.10 New Price =Rs.12 % Increase in Price=2/10x100=20% We know, Ed=% Change in Denrand / % Change in Price =-20/20=-1 Now, if price rises from 10 to 13 % Change...

(d) Ratio between the requirements of population and the resources made available to it.

The SI unit of self-inductance (Henry) can also be expressed as Ohm-second.