Question
Question: Two points P and Q are maintained at the potentials of 10V and –4V, respectively. The work done in m...
Two points P and Q are maintained at the potentials of 10V and –4V, respectively. The work done in moving 100 electrons from P to Q is.
A
– 9.60 × 10–17 J
B
9.60 × 10–17 J
C
– 2.24 × 10–16 J
D
2.24 × 10–17 J
Answer
2.24 × 10–17 J
Explanation
Solution
W = q (DV)
= q (Vf – Vi)
= – 100 × 1.6 × 10–19 (– 4 – 10)
= 1.6 × 14 × 10–17
= 2.24 × 10–17 J