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Electric Circuits

Electric Circuits
Condition of symmetry in ABCD parameter representation is

 C = D.
 B = D.
 A = D.
 AD - BC = 1.

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Electric Circuits
Consider the following circuit. What is the value of i ?

 - 5 A.
 12 A.
 6 A.
  5 A.

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Electric Circuits
A rectangular magnet of magnetic moment M is cut into two pieces of same length. The magnetic moment of each piece will be

 M / L.
 M.
 2 M.
 M / 2.

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Electric Circuits
When water is added to sulphuric acid

  lot of heat is generated.
  colour of acid changes.
  acid particles get separated.
  water start boiling.

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Electric Circuits
For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is

 1.
 16.
 4.
 1/4.

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Electric Circuits
Which resistor will be physically larger in size?

 1 k Ω, 1 W.
 100 Ω, 10 W.
 1 M Ω, 1/2 W.
 10 Ω, 50 W.

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