The electric potential as a function of x,y is given by V=5(x2−y2) V. The electric field at a point (2,3) m is __________ V/m.
Held on 6 Apr 2026 · Verified 6 Jul 2026.
(−20i^+30j^)
(20i^−30j^)
(20i^+45j^)
(−4i^+6j^)
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A short bar magnet placed with its axis at $30^{\circ}$ with an external field of 800 Gauss, experiences a torque of $0.016 \mathrm{~N}. \mathrm{m}$. The work done in moving it from most stable to most unstable position is $\alpha \times 10^{-3} \mathrm{~J}$. The value of $\alpha$ is $\_\_\_\_$.
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