Question

If 100 J of work must be done to move electric
charge equal to 4 C from a place where potential
is -10 V to another place where potential is V
volt, find the value of V.​

Answer 1

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HERE IS UR ANSWER

$_____________________________$

Given work done = 100J

charge q = 4C

from potential V1 = -10 Volts to V2 = V Volts

so,

W=q△V

W=q(V2−V1)

W=4[V2−(−10)] 

4100=V2+10

V2=15V

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Answer 2

ㅤㅤㅤㅤㅤㅤ$\huge\mathfrak{answer}$

$= = > \huge\mathfrak\red{2 \times \frac{22}{7} \times 19}$

$= = > \huge\mathfrak\red{ \frac{44 \times 19}{7} }$

$= = > \huge\mathfrak\red{ \frac{836}{7} }$

$= = > \huge\mathfrak\green{119.42 |approx| }$