Alternative Wiring: Suppose now that we had used instead a slightly different wiring setup, where the voltmeter was instead wired across both the ammeter and resistor (instead of just across the resistor). Draw the new circuit

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.