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Two different coils have self inductance...

Two different coils have self inductances `L_1=9mH` and `L_2=2mH`. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same constant rate. At a certain instant of time, the power given to the two coils is the same. At that time, the current the induced voltage and the energy stored in the first coil are `i_1,V_1` and `W_1` respectively.
Corresponding values for the second coil at the same instant are `i_2,V-2` and `W_2` respectively. Then,

A

`i_1/i_2=1/4`

B

`i_1/i_2=4`

C

`W_1/W_2=1/4`

D

`(V_(1))/(V_(2)) =4`

Text Solution

AI Generated Solution

To solve this problem, we need to analyze the relationships between the self-inductances, induced voltages, currents, and energies stored in the two coils. ### Given Data: - Self-inductance of coil 1: \( L_1 = 9 \, \text{mH} = 9 \times 10^{-3} \, \text{H} \) - Self-inductance of coil 2: \( L_2 = 2 \, \text{mH} = 2 \times 10^{-3} \, \text{H} \) - The current in both coils is increased at the same constant rate. ### Step 1: Induced Voltage ...
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Knowledge Check

  • Two different coils have self-inductances L_(1) = 8 mH and L_(2) = 2 mH . The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same constant rate. At a certain instant of time, the power given to the two coil is the same. At that time, the current, the induced voltage and the energy stored in the first coil are i_(1), V_(1) and W_(1) respectively. Corresponding values for the second coil at the same instant are i_(2), V_(2) and W_(2) respectively. Then:

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  • Two coils have self-inductance L_(1) = 4mH and L_(2) = 1 mH respectively. The currents in the two coils are increased at the same rate. At a certain instant of time both coils are given the same power. If I_(1) and I_(2) are the currents in the two coils, at that instant of time respectively, then the value of (I_(1)//I_(2)) is :

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