Electricity
Chapter 3: Chapter 3 · PHYSICS PART-1 · EN medium
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and the quotient I ( . ) is defined to be the current across the area in the forward direction. (If it turn out to be a negative number, it implies a current in the backward direction.) Currents are not always steady and hence more generally, we define the current as follows. Let ∆Q be the net charge flowing across a cross- section of a conductor during the time interval ∆t [i.e., between times t and (t + ∆t)]. Then, the current at time t across the cross-section of the conductor is defined as the value of the ratio of ∆Q to ∆t in the limit of ∆t tending to zero, ( ) lim
📖 NCERT Class 12 Physics Part 1 · Page 97
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and the quotient I ( . ) is defined to be the current across the area in the forward direction. (If it turn out to be a negative number, it implies a current in the backward direction.) Currents are not always steady and hence more generally, we define the current as follows. Let ∆Q be the net charge flowing across a cross- section of a conductor during the time interval ∆t [i.e., between times t and (t + ∆t)].
Then, the current at time t across the cross-section of the conductor is defined as the value of the ratio of ∆Q to ∆t in the limit of ∆t tending to zero, ( ) lim
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