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If 100 J of work has to be done in moving an electric charge of 4C from a place where potential is -5 V to another place, where potential is V volt. The value of V is
  • a)
    15 V
  • b)
    20 V
  • c)
    25 V
  • d)
    10 V
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If 100 J of work has to be done in moving an electric charge of 4C fro...
From the definition, the work done to a test charge ‘q0’ from one place to another place in an electric field is given by the formula
W=q0x[vfinal-vinitial ]
100=4x[v-(-5)]
v+5=25
v=20V
 
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Community Answer
If 100 J of work has to be done in moving an electric charge of 4C fro...
Potential at another point Vq=U V =u/q = 100/4 = 25 V = V(f)-V(i) 25 = V(f)-(-5) 25=V(f)+5 20=V(f)
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