Question
Question: \(14 \times 10^{15}\) electrons reach the anode per second. If the power consumed is 448 milliwatts,...
14×1015 electrons reach the anode per second. If the power consumed is 448 milliwatts, then the plate (anode) voltage is
A
150 V
B
200V
C
14×448V
D
448/14V
Answer
200V
Explanation
Solution
P=Vi⇒V=iP=14×1015×1.6×10−19448×10−3=200V