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MHT CET20239 May 2023Evening ShiftPhysicsAlternating CurrentActual

An e.m.f. E=4 (1000 t) volt is applied to an LR circuit of inductance 3 mH and resistance 4 . The maximum current in the circuit is

Options

  1. A4 7 ~A
  2. B1.0 ~A
  3. C4 7 ~A
  4. D0.8 ~A

Correct answer

D. 0.8 ~A

Step-by-step solution

For LR circuit, Z= R^2+( L)^2 Comparing equation E=4 (1000 t) with standard equation, E = E ₀ t , we get =1000 units and E₀=4 ~V aligned Z & = 16+ (1000 3^2 10⁻⁶ ) & Z= 16+9 =5 & I= E₀ Z = 4 5 =0.8 ~A aligned

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