This question contains Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement-1: The temperature dependence of resistance is usually given as R=R₀(1+ t) . The resistance of a wire changes from 100 to 150 when its temperature is increased from 27^ C to 227^ C . This implies that =2.5 10⁻³ / ^ C . Statement 2: R=R_i(1+ T) is valid on

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Directions: Question numbers 12 and 13 are based on the following paragraph. A current loop A B C D is held fixed on the plane of the paper as shown in the figure. The arcs B C (radius =b ) and D A (radius =a) of the loop are joined by two straight wires A B and C D . A steady current I is flowing in the loop. Angle made by A B and C D at the origin O is 30^ . Another straight thin wire with steady current l ₁ flowing out of the plane of the paper is kept at the origin.