3. How much work is done in moving a body carying charge equivalent to that on 5 x 10-19
electrons from infinity to a point at 40 volts?
(2 Points)
Answers
Answered by
1
120J
Explanation:
potential difference=V= (40-25)volts+ 15volts
no. of electrons= 5 x 10^19
charge of one electron= 1.6 x 10^-19
total charge=Q = 5 x10^19 x 1.6 x 10^-19= 8 coulombs
to find= work done = W
V=W/Q
therefore, W= VQ
W = (8 x 15)J =120J Ans
Answered by
1
120J
Explanation:
potential difference=V= (40-25)volts+ 15volts
no. of electrons= 5 x 10^19
charge of one electron= 1.6 x 10^-19
total charge=Q = 5 x10^19 x 1.6 x 10^-19= 8 coulombs
to find= work done = W
V=W/Q
therefore, W= VQ
W = (8 x 15)J =120J Ans..
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