Pink Yellow Which arrangement of two coils has the larger mutual inductance?BAC) They are equal32.1coil 2 coil 1 32.2A large-diameter two-turn coil (coil 2) is wrapped around a long smaller-diameter solenoid (coil 1) as shown. Which is larger M12or M21?2112IM1221IMA) M12B) M21C) M12= M21coil 2 coil 1 32.2bNow the number of turns in coil 2 is doubled. What happens to M = 2/I1?A: M is halfB: M remains constant.C: M doublesD: M quadruplesE: None of theseElectric toothbrushCT 33.21Inductor 1 consists of a single loop of wire. Inductor 2 is identical to 1 except it has two loops on top of each other. What is the B field at the center of coil 2, B2, compared to the field in the center of coil 1?A: B2= B1B: B2= 2 B1C: B2= 4 B1D: B2= B1/2Coil 1 Coil 2 I ICT 33.22Inductor 1 consists of a single loop of wire. Inductor 2 is identical to 1 except it has two loops on top of each other. How do the self-inductances of the two loops compare? (Recall, L = /I = N B A/ I)A: L2= 2 L1B:L2> 2L1C:L2< 2LCoil 1 Coil 2 I IHL IN 1What is the inductance of a solenoid with length d, area A, and turns/length n?A: m0n2AB: m0n2A dC: m0n2dD: m0n A dE: m0n ATwo long solenoids, each of inductance L, are connected together to form a single very long solenoid of inductance Ltotal. What is Ltotal?+ = L Ltotal = ? L A) 2LB) 4LC) 8LD) none of theseClicker QuestionCT 32.4CT 33.28The switch is closed at t=0.What is the current through the resistor, at t=0+ ?L = 10H V = 10V R = 20 A) 0 AB) 0.5 AC) 1 AD) 10 AE) otherCT 33.27The switch is closed at t=0.What is the initial rate of change of current di/dt in the inductor, at t=0+ ? (Hint: what is the V(init) across the inductor?)L = 10H V = 10V R = 20 A) 0 AB) 0.5 A/sC) 1 A/sD) 10 A/sE) otherCT 33.29The switch is closed at t=0.What is the current through the resistor after a very long time?L = 10H V = 10V R = 20 A) 0 AB) 0.5 AC) 1 AD) 10 AE) otherHL IN 2What are the units of L/R?A: VB: A C:A/sD: SE: 1/SHL IN 2What is the voltage across an inductor as a function of time for a “charging” LR circuit?A)tLeRVEtLVeEtLVLeEtLeVE 1tLeVLE 1B)C)D)E)CT 33.30At time t=0, the switch is closed. What is the current thru the inductor L just after the switch is closed (t= 0+)?L = 10H V = 10V R2 = 10 R1 = 10 A: 0 A B) 0.5 A C) 1.0 A D) otherCT 33.31At time t=0, the switch is closed. What is the current thru the inductor L after a long time?L = 10H V = 10V R2 = 10 R1 = 10 A: 0 A B) 0.5 A C) 1.0 A D) otherCT 33.32Now suppose the switch has been closed for a long time and is then opened. Immediately after the switch is opened, the current thru R2isL = 10H V = 10V R2 = 10 R1 = 10 A: 0 A B) Not 0 amps.The same current i flows through solenoid 1 and solenoid 2. Solenoid 2 is twice as long and has twice as many turns as solenoid 1, and has twice the diameter. (Hint) for a solenoid B = mon i )What is the ratio of the magnetic energy contained in solenoid 2 to that in solenoid 1, that is, what is2 1 I I A) 2B) 4C) 8D) 16E) None of these.12EECT 32.7What is the average power dissipated by the resistor?A) zeroB) positiveC) negativeD) Not enough informationHL AC 119CT 33.34A light bulb is attached to a wall plug. (120 VAC, 60 Hz) How many times a second is the instantaneous power output to the bulb equal to zero?A: Never, there is always powerB: 30 times/secC: 60 times/secD: 120 times/secE: Other20CT 33.35A 100 W light bulb is attached to a wall plug. (120 VAC, 60 Hz) What is the peak power output to the bulb?A) 100 WB) Sqrt[2]*100 W = 141 WC) 200 WD) OtherCT 33.15A transformer is attached to a battery and a resistor as shown. The voltage difference across the resistor R is ...A: V B: V N1/N2 C: V N2/N1D: 0 E: OtherRV N1N2iron coreCT 33.17A step-down transformer is attached to an AC voltage source and a resistor. How does IRcompare to the current that is drawn from the AC source I(in)IRIinA) IR> I(input) B) IR< I(input) C) IR=
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