If potential (in volts) in a region is expressed as $V(x,y,z)=6xy-y+2yz$, the electric field (in N/C) at point $(1,1,0)$ is:
- A$-(2\hat i+3\hat j+\hat k)$
- B$-(6\hat i+9\hat j+\hat k)$
- C$-(3\hat i+5\hat j+3\hat k)$
- D$-(6\hat i+5\hat j+2\hat k)$
✓ Correct answer: D
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