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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Analyzing
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Assertion (A) : Two non-ideal batteries are connected in parallel with same polarities on same side. The equivalent emf is smaller than either of the two emfs.
Reason (R) : Two non-ideal batteries are connected in parallel, the equivalent internal resistance is smaller than either of the two internal resistances.
Reason (R) : Two non-ideal batteries are connected in parallel, the equivalent internal resistance is smaller than either of the two internal resistances.
View answer and explanation
Correct option: D
If Assertion is false but the Reason is true.
Option D (If Assertion is false but the Reason is true) is correct because the equivalent emf can be greater than either emf, while the equivalent internal resistance is always smaller.
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Statement-1: If a resistor is connected to a battery the current decreases when the temperature increases.
Statement-2: For most of the resistors, resistance increases with increase in temperature. The reciprocal of resistance is Corresponding to the resistance , which is order of colour coding on carbon resistors? In a meter bridge, the gaps are closed by resistance 2 and 3 ohms. The value of shunt to be added to 3 ohm resistor to shift the balancing point by is
Statement-2: For most of the resistors, resistance increases with increase in temperature. The reciprocal of resistance is Corresponding to the resistance , which is order of colour coding on carbon resistors? In a meter bridge, the gaps are closed by resistance 2 and 3 ohms. The value of shunt to be added to 3 ohm resistor to shift the balancing point by is
