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krati jain
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Asked: 2023-05-22T09:06:36+00:00 In:

312. Find the curl of A = (y cos ax)i + (y + ex )k a) 2i – ex j – cos ax k b) i – ex j – cos ax k c) 2i – ex j + cos ax k d) i – ex j + cos ax k

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312. Find the curl of A = (y cos ax)i + (y + ex )k a) 2i – ex j – cos ax k b) i – ex j – cos ax k c) 2i – ex j + cos ax k d) i – ex j + cos ax k
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    10 Answers

    1. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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    3. b) i – ex j – cos ax k

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    4. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k

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    6. b) i – ex j – cos ax k

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    7. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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    9. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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    10. i – ex j – cos ax k

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    12. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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    13. b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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    15. Answer: b
      Explanation: Curl A = i(Dy(y + ex)) – j (Dx(y + ex) – Dz(y cos ax)) + k(-Dy(y cos ax))
      = 1.i – j(ex) – k cos ax = i – ex j – cos ax k.

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