When a certain circuit consisting of a constant e.m.f. E an inductance L and a resistance R is closed, the current in, it increases with time according to curve 1. After one parameter (E, L or R) is changed, the increase in current follows curve 2 when the circuit is closed second time. Which parameter was changed and in what direction
Text Solution
Verified by ExpertsThe correct answer is:
A
slope of 
graph slope of graph (2) < slope of graph (1) so 
Also 
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