Question 18.8: A 10-H inductance L1 on an iron core produces 4 Wb of magnet...

Contemporary Electronics: Fundamentals, Devices, Circuits, and Systems [EXP-36259]

A 10-H inductance $L_1$ on an iron core produces 4 Wb of magnetic flux. Another coil $L_2$ is on the same core. How much is k between $L_1$ and $L_2$ ?

The Blue Check Mark means that this solution has been answered and checked by an expert. This guarantees that the final answer is accurate.
Learn more on how we answer questions.

Related Answered Questions

How much is the inductance of a coil that induces 1000 V when its current changes at the rate of 50 mA in 2 μs?

Verified Answer:

For this example, the 1/dt factor in the denominat...

Two series coils, each with an L of 250 μH, have a total inductance of 550 μH connected series-aiding and 450 μH series-opposing. (a) How much is the mutual inductance LM between the two coils? (b) How much is the coupling coefficient k?

Verified Answer:

a.

L_M=\frac{L_{T_a}-L_{T_o}}{4} [...

In Fig. 18-19, calculate the turns ratio NP/NS that will produce a reflected primary impedance ZP of (a) 75 Ω; (b) 600 Ω

Verified Answer:

(a) Use Formula (18-11).

\frac{N_P}{N_S...

Determine the primary impedance ZP for the transformer circuit in Fig. 18-18.

Verified Answer:

Use Formula (18-10).

Z_P=(\frac{N_P}{N_S})^2...

Inductance L1 in Fig. 18-25 is 5 mH and L2 is 10 mH. How much is LT?

Verified Answer:

L_T=5 mH +10 mH= 15 mH.

In Fig. 18-14b, calculate the primary current IP if the secondary current IS equals its rated value of 2 A.

Verified Answer:

Rearrange Formula (18-8) and solve for the primary...

Inductances L1 and L2 in Fig. 18-26 are each 8 mH. How much is LEQ?

Verified Answer:

L_{EQ}=\frac{1}{1/8+1/8}

=4 mH

If the two coils in Example 18-9 had a mutual inductance LM of 40 mH, how much would k be?

Verified Answer:

Formula (18-4)

L_M=K\sqrt{L_1\times L_2}[/l...

A transformer with a 20:1 voltage step-down ratio has 6 V across 0.6 Ω in the secondary. (a) How much is IS? (b) How much is IP?

Verified Answer:

a.

I_S=\frac{V_S}{R_L}=\frac{6 V}{0...

A transformer with a 1:6 turns ratio has 720 V across 7200 Ω in the secondary. (a) How much is IS? (b) Calculate the value of IP.

Verified Answer:

a.

I_S=\frac{V_S}{R_L}=\frac{720 V}{72...