7. Consider a circuit with an inductor, a DC voltage source, a resistor, and an open switch. Immediately after the switch is closed, are the following quantities zero, maximum, or of an intermediate value? (a) The current through the inductor. (b) The rate of change of current through the inductor. (c) The voltage across the inductor. (d) The magnetic flux through each coil of the inductor. (e) The energy stored in the inductor.
Q: A 2.0 H inductor carries a constant current of 0.5 A. When the switch in the circuit is opened, the…
A: Inductance (L) = 2 H Initial constant current (I) = 0.5 A Final current (I') = 0 A Time (t) = 20…
Q: 16. Suppose Consider the circuit below. Switch S is closed at t = 0. What is the current through the…
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Q: 1. The heating coils in a hair dryer are 0.82 cm in diameter, have a combined length of 0.5 m, and a…
A: Given:Diameter of coils: d=0.82 cm=0.0082 mCombined length of the coils: l=0.5 mNumber of turns:…
Q: A 6,000 pF capacitor is charged to 160 V and then quickly connected to a 20 mH inductor. (a)…
A: Given: C=6000 pF = 6000*10-12 FV = 160 VL = 20mH = 20*10-3 H
Q: . A large research solenoid has a self-inductance of 20.0 H. What induced emf (in V) opposes…
A: Inductance of an inductor L = 20.0 H Current passed through…
Q: 4. A circular coil has 275 turns and a radius of 0.045 m. The coil is used as an ac generator by…
A: Solution:-Given thatN=275 turnsR=0.045 mB=0.5 TMaximum emf (emax)=175 V
Q: 17. The magnetic flux through three different coils is changing as shown in Figure P21.17. For each…
A:
Q: 5. The armature of a simple AC generator consists of a square loop of wire with one turn and having…
A: Given: The side length of the square is 20.0 cm. The magnetic field is 4.00 T.…
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Q: A solenoid has a radius of 2.5 cm, 130 turns, and a length of 85 cm. 1. Suppose the two terminals of…
A: Step 1: Formulate the magnetic field inside the solenoid due to current Recall: B=lμ0NI Step 2:…
Q: 1. A large research solenoid has a self-inductance of 26 H. (a) What induced emf opposes shutting it…
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Q: voltage equal to the emf
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Q: A solenoid has a radius of 2.5 cm, 130 turns, and a length of 85 cm. 1. Suppose the two terminals of…
A: Solenoid Problems:1. Current Decay and Resistance:We can find the total resistance in the circuit…
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A: Hi please find solution to your problem Formula used E = 1/2 *L*I^2
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A: Given,
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A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: resistor and inductor are connected to a 9.0 V battery by a switch as shown. The moment the switch…
A: A resistor and inductor are connected to a 9.0 V battery. Resistance R = 160 Ω and inductor L=65 mH
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A: In an inductor an induced emf is produced when current flows through it due to mutual inductance.
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A: Self inductance (L) =10 henry Current through coil changes at a rate of 5 Amps per second Emf will…
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A: Voltage is Resistance is Inductance is Note:Find:(a) Time in which the current through the inductor…
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- 10. A square coil of side 6.50 cm contains 110 loops and its plane is positioned perpendicular to a uniform 0.80-T magnetic field, as shown. It is quickly and uniformly pulled from the field to a region where the B-field drops abruptly to zero. It takes 0.14 s for the whole coil to reach the field-free region. How much power is dissipated in the coil if its resistance is 130 2? oof19 0of19 0of19 0of19 oof19 o0 19 0of19 oof19 Xxx X XX X 19 0of19 0of19 oof19 oof XX X Xx x x x X 197f19.0of19.oof xx x x x xX x Xxx X XX X X 19 00 oof19.of145. A DC voltage source is connected to a resistor of resistance R and an inductor with inductance L, forming the circuit shown in the figure. For a long time before t=0, the switch has been in the position shown, so that a current I0 has been built up in the circuit by the voltage source. At t=0 the switch is thrown to remove the voltage source from the circuit. This problem concerns the behavior of the current I(t) through the inductor and the voltage V(t) across the inductor at time t after t=0. What is the differential equation satisfied by the current I(t) after time t=0? What is the expression for I(t) obtained by solving the differential equation that I(t) satisfies after t=0? What is the time constant τ of this circuit?1. (a) What quantity is changing in order to produce an induced emf according to Faraday’s law? (b) How is this quantity defined? (c) Describe three distinct ways that the quantity in (b) can be changed. (d) What is Lenz’s law?
- 8. Two coils close to each other have a mutual inductance of 32 mH. If the current in one coildecays according toI=I0e−αt, whereI0= 5.0Aandα= 2.0×103Hz, what is the emfinduced in the second coil (a) immediately after the current starts to decay? (b) Att= 10−3s? This is not and will not be graded13. The current i through a 4.7 H inductor varies with time t as shown by the graph of the figure. The inductor has a resistance of 9.5 N. Find the magnitude of the induced emf ɛ in V during the time intervals 2 ms to 5 ms (Ignore the behavior at the ends of the intervals.) 6 4. t (ms) 6. (a) 1.65x103 (b) 3.13x103 (c) 1.85x10ª (d) 2.35x10ª (e) None of the above4. A square circuit has 2 m sides and is perpendicular to a uniform magnetic field, with half the area of the loop in the field, as shown. The loop contains a 9 V voltage source. The magnitude of the magnetic field varies with time, with B = 6 + 5t, where B is the field strength in teslas and t is the time in seconds. (a) Determine the value of the induced emf in the circuit. (b) Which way does the overall current flow in the circuit, clockwise or counter-clockwise? Or is the current zero? Explain why your answer is correct.
- 3. After a very long time, across which circuit element is the voltage equal to the emf of the battery? (a) the resistor (b) the inductor (c) both the inductor and resistor4.) In the circuit shown, the initial voltage across the 10 microFarad capacitor is 12V. The solenoid has an inductance of 0.7 H. There is no resistance. a) Find the charge on the capacitor 1.0 millisecond after the switch S is closed. b) At what time will the current in the solenoid reach its maximum value? c) What is the maximum energy stored in the magnetic field of the solenoid?21. Determine the inductance of a solenoid with 660 turns in a length of 34 cm. The circular cross section of the solenoid has a radius of 4.6 cm. Chap 23_#50
- 17. The magnetic flux through three different coils is changing as shown in Figure P21.17. For each situation, draw a corresponding graph showing quantitatively how the induced emf changes with time. FIGURE P21.17 $(T•m²) 0.4 0.2 0 0 2 4 (T • mỏ) 0.4 0 01234 p(T•mỏ) +0.2 A 1 2 3 t(s) -0.2 -t (s)7. A coil with a self-inductance of 2.0 H carries a current that varies with time according to I(t) = (2A) sin(120πt). Find an expression for the emf induced in the coil. This is not and will not be gradedA 5 H inductor carries a current of 2 amps. How can a self-induced EMF of 50 volts be made to appear across the inductor? Change the current to 10 A. Change the current uniformly to zero in 20 seconds. Break the circuit instantaneously. Change the current at the rate of 10 A/s None of these