A steady current of 3 A produces a flux of 130 uWb in a coil of...

Question

Question

A steady current of 3 A produces a flux of 130 uWb in a coil of 240 turns. What is the inductance (in mH) of the coil? A. 15.

Answer 1

Answer #1

inductance = N $\phi$ / I

where N = number of turns

$\phi$ = magnetic flux , I = current

L = 240*130*10^-6 / 3

= 0.0104 H

= 10.4 mH

so the inductance is 10.4 mH

Answer 2

Similar Homework Help Questions

12. An emf of 96.0 mV is induced in the windings of a coil when the...

12. An emf of 96.0 mV is induced in the windings of a coil when the current in a nearby coil is increasing at the rate of 1.20 A/s. What is the mutual inductance of the two coils? A. 12mH B. 20 mH C.40 mH D. 80 mH For items 13-15 consider the RL circuit shown at left with the following values ε-12.OV, R ; 6.0 Ω and Le 30.0 mH. Switch s L is set at position a at...
Coil 1 has L1 = 40 mH and N1 = 101 turns. Coil 2 has L2...

Coil 1 has L1 = 40 mH and N1 = 101 turns. Coil 2 has L2 = 41 mH and N2 = 234 turns. The coils are fixed in place; their mutual inductance M is 5.6 mH. A 6.1 mA current in coil 1 is changing at the rate of 4.4 A/s. (a) What magnetic flux Φ12 links coil 1, and (b) what self-induced emf appears in that coil? (c) What magnetic flux Φ21 links coil 2, and (d) what...
Coil 1 has L1 = 50 mH and M, = 104 turns. Coil 2 has L2...

Coil 1 has L1 = 50 mH and M, = 104 turns. Coil 2 has L2 = 68 mH and M2 = 227 turns. The coils are fixed in place; their mutual inductance M is 3.6 mH. A 8.0 mA current in coil 1 is changing at the rate of 4.8 A/s. (a) What magnetic flux D12 links coil 1, and (b) what self-induced emf appears in that coil? (c) What magnetic flux D21 links coil 2, and (d) what...

10. A coil has 400 turns and self-inductance 4.80 mH. The current in the coil varies...

10. A coil has 400 turns and self-inductance 4.80 mH. The current in the coil varies with time according to i=(680mA)cos(att/0.0250s). (a) What is the maximum emf induced in the coil? (b) What is the maximum average flux through each turn of the coil? (c) At t= 0.0180 s, what is the magnitude of the induced emf?
A coil has 460 turns and self-inductance 7.50 mH. The current in the coil varies with...

A coil has 460 turns and self-inductance 7.50 mH. The current in the coil varies with time according to i=(680mA)cos[πt/(0.0250s)]. What is the maximum emf induced in the coil? What is the maximum average flux through each turn of the coil? At t=0.0180 s, what is the magnitude of the induced emf?
The inductance of a closely wound coil is such that an emf of 4.71 mV is...

The inductance of a closely wound coil is such that an emf of 4.71 mV is induced when the current changes at the rate of 3.1 A/s. A steady current of 3.87 A produces a magnetic flux of 43.9 mu Wb through each turn. (a) Calculate the inductance of the coil. (b) How many turns does the coil have? (a) Number Units (b) Number Units

Please show the derivation of the formulas! Coil 1 has L1 = 25 mH and N1...

Please show the derivation of the formulas! Coil 1 has L1 = 25 mH and N1 = 100 turns. Coil 2 has L2 = 40mH and N2 = 200 turns. The coils are fixed in place; their mutual inductance M is 3.0 mH. A 6.0 mA current in coil 1 is changing at the rate of 4.0 A/s. (a) What magnetic flux 012 links coil 1, and (b) what self-induced emf appears in that coil? (c) What magnetic flux 021...
9. -/10 points My Notes Ask Your Teacher Two solenoids A and B, spaced close to each other and sharing the same cyl...

9. -/10 points My Notes Ask Your Teacher Two solenoids A and B, spaced close to each other and sharing the same cylindrical axis, have 390 and 630 turns, respectively. A current of 2.00 A in solenoid A produces an average flux of 300 Wb through each turn of A and a flux of 90.0 uWb through each turn of B. (a) Calculate the mutual inductance of the two solenoids. mH (b) What is the inductance of A? CmH (c)...
The current in a coil changes from 5.2 A to 3.2 A in the same direction...

The current in a coil changes from 5.2 A to 3.2 A in the same direction in 2.99 seconds. If the averaged emf induced in the coil is 10.3 mV, what is the inductance of the coil? Answer in mH with 1 decimal point.

8. A coil has 1000 turns. When the current in the coil is 4.00 A, the...

8. A coil has 1000 turns. When the current in the coil is 4.00 A, the average flux through each turn of the coil is 0.0250 Wb. What is the self-induced emf in the coil (in V) when the current in the coil is changing at a rate of 12.0 A/s? (A) 93.8 (B) 82.6 (C) 75.0 (D) 41.5 (E) 50.0 (F) 67.5 OA OB Ос OD OE OF