- #1
PhysicsTest
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- 26
- Homework Statement
- a. Find the magnitude of the Hall voltage VH in an n-type germanium bar used in fig, having majority-carrier concentration ND = 10^17 /cm^3. Assume Bz=0.1 Wb/m^2, d=3 mm, Ex=5V/cm.
b. What happens to VH if an identical p-type germanium bar having NA=10^17/cm^3 is used in part a?
- Relevant Equations
- ##V_H = Ed=Bvd = \frac{BJd} {\rho w} ##
The question is to find the Hall voltage
The magnetic field is in the +ve Z-direction, the electric field is in the +ve X-direction, the current will be in -ve Y direction.
There are many equations to find the hall voltages ##V_H = Ed=Bvd = \frac{BJd} {\rho w} ##. But i find the equation ##V_H = Ed## to solve and other parameters are not much of use.
a. n-type 4 will be more negative than 3 and ##V_H = 5*0.3V = 1.5V##
b. p-type 4 will be more positive than 3 and ##V_H = 5*0.3V = 1.5V##
Is the solution correct, or missing something?
The magnetic field is in the +ve Z-direction, the electric field is in the +ve X-direction, the current will be in -ve Y direction.
There are many equations to find the hall voltages ##V_H = Ed=Bvd = \frac{BJd} {\rho w} ##. But i find the equation ##V_H = Ed## to solve and other parameters are not much of use.
a. n-type 4 will be more negative than 3 and ##V_H = 5*0.3V = 1.5V##
b. p-type 4 will be more positive than 3 and ##V_H = 5*0.3V = 1.5V##
Is the solution correct, or missing something?