Oscilloscopes are found in most science laboratories. Inside, they contain defle

Question

Oscilloscopes are found in most science laboratories. Inside, they contain deflecting plates consisting of more-or-less square parallel metal sheets, typically about 2.50cm on each side and 2.50mm apart. In many experiments, the maximum potential across these plates is about 30.0V .

A)For this maximum potential, what is the strength of the electric field between the plates?

B) For this maximum potential, what magnitude of acceleration would this field produce on an electron midway between the plates?

Please show work :)

THANKS

Explanation / Answer

a)

Electric field strength

E=V/d =30/(2.5*10^-3)

E=12000 N/C or 12 KN/C

b)

acceleration

ma=qE

=>a=qE/m =(1.6*10^-19)(12000)/(9.11*10^-31)

a=2.11*10^15 m/s^2

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