The energy gained by an electron in an electric field E over a mean free path l is given by: eEl = 2 eV Solving for E: E = 2 × 1.6 × 10⁻¹⁹ /4 × 10⁻⁸ = 8 × 10⁷ ...
Discussion Forum Latest Questions
The temperature dependence of resistivity ρ(T) is influenced by: (a) Number of charge carriers can change with temperature T → In semiconductors and insulators, the number of free charge carriers increases with temperature, significantly affecting resistivity. (b) Time interval between ...
To find the charge, integrate the given current function with respect to time from t = 0 to t = 2. The integral of current over time gives total charge. After solving, the charge is found to be 22 C, ...
Using the drift velocity formula vd = I/nAe’ where n = 8 × 10²⁸ electrons/m³, A = 5 × 10⁸ m², and e = 1.6 × 10⁻¹⁹ C, we get t = 6.4 × 10³ s Answer: (c). Class ...
The energy stored in the battery is given as 7.20 × 10⁴ J, and the charging voltage is 12 V. Using the relation: E = QV where: . E = Energy (7.20 × 10⁴ J) . Q = Charge (to ...