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121. Suppose five resistance, each of 10 ohm, are provided to you. You are free to get the desired value by combining them. The desired value will lie in between. (NTSE Chandigarh, Stage-I, 2015-16)
2 ohm to 50 ohm
20 ohm to 40 ohm
12 ohm to 50 ohm
10 ohm to 60 ohm
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122. Out of two bulbs 50 W - 220 V and 100 W - 220 V, which one will glow brighter if (a) Connected in series (b) When connected in parallel (NTSE Jharkhand, Stage-I, 2015-16)
(a) 50 W, (b) 100 W
(a) 100 W, (b) 100 W
(a) 100 W, (b) 50 W
None of these
123. Three conductors draw currents of 1 A, 2 A and 4 A respectively, when they are connected to a battery individually. If they are connected in series to same battery, the current drawn will be (NTSE Telangana, Stage-I, 2015-16)
A
124. If the current flowing through a fixed resistor is halved, the heat produced in it becomes (NTSE Madhya Pradesh, Stage-I, 2015-16)
Double
Half
One fourth
Four times
125. In an electric circuit 1 x 1018 hydrogen ions are travelling per second in the right direction while double number of electrons are travelling per second in left direction, the total current through the path is (NTSE Maharashtra, Stage-I, 2015-16)
4.8 A
1 A
0.48 A
0.1 A
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