The total charge q(t), in the coulombs, that enters the terminal of an element is:

Determine the current at t = 5 s.

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SSC JE EE Previous Paper 12 (Held on: 24 March 2021 Evening)
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  1. 0 A
  2. 2 A
  3. -2e-6 A
  4. 3 + e-6 A

Answer (Detailed Solution Below)

Option 3 : -2e-6 A
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RRB JE CBT I Full Test - 23
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Detailed Solution

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Concept: 

Electric Current:  Electric current may be defined as the time rate of net motion of an electric charge across a cross-sectional boundary.

Electric current , i = Rate of transfer of electric charge.

i (t) = 

Calculation:

t = 5 s so, equation 3rd is consider.

Put the value of t = 5, then we get,

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