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NEET2021PhysicsCurrent ElectricityActual

Column - I gives certain physical terms associated with flow of current through a metallic conductor. Column - II gives some mathematical relations involving electrical quantities. Match Column - I and Column - II with appropriate relations. Column - I Column - II (A) Drift Velocity P m n e 2 ρ (B) Electrical Resistivity Q n e v d (C) Relaxation Period R e E m τ (D) Current Density S E J

Options

  1. A( A ) - ( R ) , ( B ) - ( S ) , ( C ) - ( P ) , ( D ) - ( Q )
  2. B( A ) - ( R ) , ( B ) - ( S ) , ( C ) - ( Q ) , ( D ) - ( P )
  3. C( A ) · ( R ) , ( B ) - ( P ) , ( C ) - ( S ) , ( D ) - ( Q )
  4. D( A ) - ( R ) , ( B ) - ( Q ) , ( C ) - ( S ) , ( D ) - ( P )

Correct answer

A. ( A ) - ( R ) , ( B ) - ( S ) , ( C ) - ( P ) , ( D ) - ( Q )

Step-by-step solution

Drift velocity, V = e E m τ Electrical resistivity, ρ = E J Relaxation period, τ = m n e 2 ρ Current Density, J = n e V d A - R ,   B - S ,   C - P ,   D - Q

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