Question

Two different coils have self-inductances L₁ = 8 mH and L2 = 2 mH. Currents in both coils are increased at a same constant rate. Also, at a certain instant, the powers given to the two coils are same. If I1, V1, U1 and I2, V2, U2 represent the current, the induced voltage and the energy stored in the first coil and in the second coil respectively at any particular instant, then which of the following is/are correct?

• A. $\frac{I_1}{I_2}=\frac{1}{4}$
• B. $\frac{V_1}{V_2}=\frac{1}{4}$
• C. $\frac{U_1}{U_2}=\frac{1}{4}$
• D. VI is constant

Answer 1

Answer: (A), (C), (D)

$\frac{I_1}{I_2}=\frac{1}{4}$

Answer 2

The correct option is: A ,C and D