Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > (A) Consider circuit in figure. How much energy is absorbed by electrons from the initial state of no current (Ignore thermal motion) to the state of drift velocity? (b) electrons give up energy at the rate of RI2 per second tot he thermal energy. What time scale would number associate with energy in problem (a)? n= number of electron/volume = 10^29 m^3 length of circuit=10 cm, cross-section A=(1 mm )2

(A) Consider circuit in figure. How much energy is absorbed by electrons from the initial state of no current (Ignore thermal motion) to the state of drift velocity? (b) electrons give up energy at the rate of RI2 per second tot he thermal energy. What time scale would number associate with energy in problem (a)? n= number of electron/volume = 10^29 m^3 length of circuit=10 cm, cross-section A=(1 mm )2

find the powers consumed by the resistors 2 ohm and 1 ohm If the cell of emf 5 volt shown in the figure gives a power of 10 W