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11. Three resistance A, B, G are connected as shown in the figure. Their resultant resistance is (NTSE Andhra Pradesh, Stage-I, 2012-13)
11 Ω
7.2 Ω
6 Ω
5 Ω
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12. The particle with mass equal to 9.1 x 10-31 kg and charge equal to -1.6 x 10-19 G is (NTSE Andhra Pradesh, Stage-I, 2012-13)
β
α
γ
X
13. An electric iron is connected to a 200 V mains supply and draws a current of 4.0 A. What is the power rating of the iron? (NTSE Mizoram, Stage-I, 2012-13)
800 W
50 W
106 W
112 W
14. A single electron has charge = 1.6 x 10-19C. If the current passing through a conducting wire is 0.32 A, how many electrons would pass through the wire in one hour? (NTSE Odisha, Stage-I, 2012-13)
72 x 1020
20 x 1015
7.2 x 1019
2 x 1018
15. An electric bulb is rated 100 W at 220 V. When it is connected to 110 V main supply, the power consumed would be (NTSE Odisha, Stage-I, 2012-13)
100 W
75 W
50 w
25 W
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