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Consider the following statements \[\] Statement 1: If the current in the solenoid is reversed in direction while keeping the magnitude constant, the energy stored in the solenoid decreases \[\] Statement 2: Magnetic field energy is proportional to the square of the current

$\begin {array} {1 1} (a)\;Both \: the\: statements\: are\: true. \: Statement \: 2 \:is\: a \: correct \: explanation\: of\: statement\: 1 \\ (b)\;Both \: the\: statements\: are\: true. \: Statement \: 2 \:is\: not \: a \: correct \: explanation\: of\: statement\: 1 \\ (c)\;Statement \: 1 \: is\: true,\: statement\: 2\: is\: false \\ (d)\;Statement \: 2 \: is\: true,\: statement\: 1\: is\: false \end {array}$

 

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The energy remains constant if the sign of the current is changed
Ans : (d)
answered Feb 21, 2014 by thanvigandhi_1
 

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