In a uniform electric field, the potential is 10 V at the origin of coordinates, and 8V at each of the points (1, 0, 0), (0, 1, 0) and(0, 0, 1). The potential at the point (1, 1, 1) will be
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દુઆઈહે gdgrbrud dybdv
દુઆઈહે gdgrbrud dybdv
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Answer:4 V
Explanation:Let the electric field vector E→=Exi^+Eyj^+Ezk^E→=Exi^+Eyj^+Ezk^
VA−VB=−∫ABE→.drVA−VB=−∫BAE→.dr
V(1,0,0)−V(0,0,0)=−∫(1,0,0)(0,0,0)Ex=[−Exx](1,0,0)(0,0,0)V(1,0,0)−V(0,0,0)=−∫(0,0,0)(1,0,0)Ex=[−Exx](0,0,0)(1,0,0)
8−10=−Ex8−10=−Ex
Ex=2Ex=2
Similarly V(0,1,0)−V(0,0,0)=−∫(0,1,0)(0,0,0)EydyV(0,1,0)−V(0,0,0)=−∫(0,0,0)(0,1,0)Eydy
−2=−Ey×1−2=−Ey×1
Similarly Ez=2Ez=2
Thus
E→=2i^+2j^+2k^E→=2i^+2j^+2k^
Now
V(1,1,1)−V(0,0,0)=−∫(1,1,1)(0,0,0)(2i^+2j^+2k^).(dxi^+dyj^+dzk^)V(1,1,1)−V(0,0,0)=−∫(0,0,0)(1,1,1)(2i^+2j^+2k^).(dxi^+dyj^+dzk^)
=−∫(1,1.1)(0,0,0)(2dx+2dy+2dz)=−∫(0,0,0)(1,1.1)(2dx+2dy+2dz)
=−(2×1+2×1+2×1)=−(2×1+2×1+2×1)
V(1,1,1)−10=−6V(1,1,1)−10=−6
V(1,1,1)=4V.
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