Q1. At temperatures near room temperature, the temperature dependence of the conductivity fo intrinsic germanium is found to equal: -E o =C (T 3/2' )exp 2kT where C is a temperature-independent constant and T is in Kelvins. a) Calculate the intrinsic electrical conductivity of germanium at 150°C. b) Determine the temperature at which the electrical conductivity of intrinsic germanium is 22. (N-m)'!.

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Electric field

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying magnetic fields, the electric field originates. One of the manifestations of electromagnetic force which is one of the four fundamental forces present in nature are the electric fields and magnetic fields.