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Physics - Current Electricity

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91. If n conducting wire, each of resistance 4 Ω is connected in parallel, then its equivalent resistance will be (NTSE Uttar Pradesh, Stage-I, 2016-17)

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92. A technician has 10 resistor each of resistance 0.1 Ω. The largest and smallest resistance he can obtain by combining these resistors are (NTSE Uttar Pradesh, Stage-I, 2016-17)

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93. N identical cells are connected to form a battery. When the terminals of the battery are joined directly, current I flows in the circuit. To obtain maximum value of I (NTSE Haryana, Stage-I, 2016-17)

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94. Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature 100 W, 60 W and 40 W bulbs have filament resistance R100, R60 and R40 respectively, then the relation between these resistance is (NTSE Haryana, Stage-I, 2016-17)

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95. How much heat does a 40 W bulb generate in 1 hour? (NTSE Kerala, Stage-I, 2016-17)

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