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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
1 of 1
Understanding
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Consider the following statements and select the correct statement(s).
I. Current is the time rate of flow of charge through any cross-section
II. For a given conductor current does not change with change in cross-sectional area
III. The net charge in a current carrying conductor is infinite
I. Current is the time rate of flow of charge through any cross-section
II. For a given conductor current does not change with change in cross-sectional area
III. The net charge in a current carrying conductor is infinite
View answer and explanation
Correct option: A
I and II
Option A (I and II) is correct because current is the rate of charge flow, and it remains constant for a given conductor regardless of cross-sectional area changes.
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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
