State the value of the difference between `E_(v)` and `E_(C )` for C, Si and Ge.

Two insulating plates arc both uniformly charged in such a way that the potential difference between them is V_(2) - V_(1) = 20V (i.e. plate 2 is at a higher potential). The plate are separated by d = 0.1m and can be treated as infinitely large. An electron is released from rest on the inner surface of plate 1. What is its speed when it hits plate 2 ? (e = 1.6xx10^(-19) C m_(e)= 9.11xx10^(-31) kg )

Four idential cells each having e.m.f. E, internal resistance r are connected as shown in figure. Find the potential difference between: (i) A and B (ii) A and C

Write difference between C_P-C_V=R, C_P-C_V=R/J

In series L-C-R circuit, resistance, inductance and capacitance are connected in series. The value of potential difference across three are 70 V, 90 V and 65 V respectively. The value of potential difference of A.C. source is …...

The circuit in figure shows two cells connected in opposition to each other. Cell E_(1) is of emf 6 V and nternal resistance 2 Omega the cell E_(2) is of emf 4 V and internal resistance 8 Omega . Find the potential difference between the points A and B.

indicate the number of unpaired electrons in (a ) p , (b ) Si , (c ) Cr (d ) fe and (e ) kr .