A study positive tube diode consists of the concentric cylinder electrodes, the negative and the positive anode. Due to the accumulation of charge near the cathode, the electric potential between the electrodes is given by V(z)=cz4/3 where is the distance z to the cathode and is a constant, characteristic of a diode and particular operating conditions. Assume that the distance between the cathode and the anode is 29 mm a and the potential difference between the electrodes is 240V. a)Find the value of C. b)Find a formula for the electric field between the electrodes as a function of z. c) Determine the force on an electron when it is at the midpoint of the straight line connecting the electrodes.
A study positive tube diode consists of the concentric cylinder electrodes, the negative and the positive anode. Due to the accumulation of charge near the cathode, the electric potential between the electrodes is given by
V(z)=cz4/3
where is the distance z to the cathode and is a constant, characteristic of a diode and particular operating conditions. Assume that the distance between the cathode and the anode is 29 mm a and the potential difference between the electrodes is 240V.
a)Find the value of C.
b)Find a formula for the electric field between the electrodes as a function of z.
c) Determine the force on an electron when it is at the midpoint of the straight line connecting the electrodes.
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