Day 276: MHT-CET Physics

1. A.
   $-q$
2. B.
   $\frac{q}{2}$
3. C.
   $-2q$
4. D.
   $-\frac{q}{2}$

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1. A.
   $655$ mm
2. B.
   $288$ mm
3. C.
   $555$ mm
4. D.
   $355$ mm

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1. A.
   $\frac{\mu_{0}i}{4\pi r}\left( \frac{3\pi}{2} + 1 \right)( - \widehat{k})$
2. B.
   $\frac{\mu_{0}i}{4\pi r}\left( \frac{3\pi}{2} + 1 \right)\widehat{k}$
3. C.
   $\frac{\mu_{0}i}{4\pi r}\left\lbrack \frac{3\pi}{2} - 1 \right\rbrack( - \widehat{k})$
4. D.
   $\ \frac{\mu_{0}i}{4\pi r}\left\lbrack \frac{3\pi}{2} - 1 \right\rbrack\widehat{k}$

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1. A.
   $\left( \frac{\sqrt{5} + 1}{\sqrt{5} - 1} \right)$
2. B.
   $\sqrt{5}:1$
3. C.
   $\left( \frac{\sqrt{5} - 1}{\sqrt{5} + 1} \right)$
4. D.
   $1:\sqrt{5}$

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1. A.
   $9995\Omega$ in series.
2. B.
   $4995\Omega$ in series.
3. C.
   $9.5 \times 10^{- 3}\Omega$ in parallel.
4. D.
   $4.95 \times 10^{- 3}\Omega$ in parallel.

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