# 2nd PUC Physics Series-10

#### PUC Science 2nd Year Physics Series-10 quiz

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2nd PUC Physics Series 10

TEST YOUR KNOWLEDGE OF SCIENCE

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91. he temperature coefficient of resistance is expressed in :

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92. Copper wire is used as connecting wire because :

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93. The heat sensitive device whose resistivity changes very rapidly with change of temperature is called a :

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94. The phenomenon of super-conductivity was discovered by :

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95. The specific resistance of a conductor increases with :

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96. In an experiment with potentiometer, null point with a cell is found at 240 cm. When the cell is shunted with a resistance 2 Ω, the null point becomes 120 cm internal resistance of cell is :

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Q.97 Two conductors of equal length and radii the ratio of 2 : 3 are; connected in parallel the source of electricity. The ratio of the velocity of electrons in the conductor be :

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98. The charge flowing in a conductor varies with time as :
q = αt 12 βt² + 16 γt³
Where α, β, γ are positive constants. Then the initial current (l) is given by the condition :

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99. In questions 38, the maximum value of current (lmax) is given by the condition :

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100 In questions 38, the line (t) after which the value of current reaches a maximum values given by :