5. The solenoid in the circuit is made of tightly wound 1200 turns of wire on a 50.0 cm long cardboard cylinder with 3.0 cm diameter. The switch is initially in position a. Then at time t = 0, S is flipped to position b. The self- induced emf is given with & = Ege-kt, wherek =4.0 x 104 s1, and ɛo = 0.5 V. Find the inductance of the inductor and the total charge that passes a point in the wire of the solenoid after S has been flipped to position b. Ri

Q: R₁ R₂ Vemf,2 + Vemf,1 The single-loop circuit shown has Vemf, 1 = 17.37 V, Vemf,2 12.69 V, R₁ =…

A: Given, The voltage,  Vemf,1=17.37VVemf,2=12.69V The resistances, R1=29.49ΩR2=13.59Ω Let the current…

Q: 6. A 230 V shunt motor has a nominal arma- ture current of 60 A. If the armature resist- ance is…

A:

Q: ww 22. 3R R ٤٠ DC Circuit In this circuit R = 10.0 and ε = 5.0 V. a. What current flows through the…

A:

Q: Don't use chat gpt

A:

Q: The motor in a toy car operates on 5.30 V, developing a 3.90 V back emf at normal speed. If it draws…

A:

Q: The motor in a toy car operates on 6.00 V, developing a 4.50 V back emf at normal speed. If it draws…

A: Given  V = 6.00V  Vback = 4.50 V I = 3.20 A R =???  I1 =???..(at start  Vback =0 V)

Q: The capacitor in the figure below is uncharged for t < 0. If e m f = 9.42 V, R = 59.4 Ω, and C =…

A: Given, emf,ε=9.42V,Resistance,R=59.4ΩCapacitor,C=2.50μF = 2.5×10-6FExpression be…

Q: The circuit in Figure 2 is closed at time t = 0 s. Find the c circuit at time t = 2 ms. Figure 2 O…

A:

Q: Imagine a conductor on rails that completes the circuit below. There is also a magnetic field with…

A: Induced emf=lVB So i=E/R And recall P=iV

Q: In the circuit shown in the figure below, let L = 2.60 H, R = 6.70 2, and E= 120 V. What is the…

A: In an LR circuit, the self-induced emf (εL) is given by: εL=LdIdt=Ɛ-IR where L is the inductance, I…

Q: In the circuit shown in the figure below, let L = 2.20 H, R = 6.80 Ω, and  = 120 V. What is the…

A:

Q: What is the effect on the EMF of increasing the number of turns of wire from N = 1 to N = 400?

A: The answer to the given question is as follows.

Q: In the figure R₁ = 9.69 kQ2, R₂ = 15.9 kQ, C = 0.379 μF, and the ideal battery has emf ε =20.0 V.…

A: Given Data:The resistance of resistor 1 is The resistance of resistor 2 is The capacitance of the…

Q: V 25. In the circuit of Figure P27.25, the switch S has been open for a long time. It is then…

A: a Time constant before switch is closed,Resistance R1 and R2 are in…

Q: R Consider an RL circuit as shown in the Figure with V = 5 V, L = 10 mH, and R = 2000 Q. After the…

A: V = 5 volts L = 10 mH = 0.01 H R = 2000 ohm

Q: None

A: thank you

Q: A GOV motor has an ammeter hooked up to It. At motor start up, the reading is BA. A moment later,…

A: Given:- Vmotor = 60 V  Istartup = 8 A The current drops to Idrop = 2A Find:- The emf of the electric…

Q: For the RL circuit as shown in the following: R = 150 Ohms, L= 0.38 mH and E = 12.00 V a Leele R 23.…

A: 27)I max = 12/150  = 0.08 ANow, current = 0.02 Achange in current = |0.02 -0.08| = 0.06 AUsing…

Q: (a) What is the circuit's time constant (in s)? (b) After the switch is closed for one time…

A: Given: Capacitance C=37.5μF Resistance R=77.5 kΩ= Emf E=33.0 V To Find: a) What is circuit's Time…

Q: An ondinary gold wedding ring is tossed end over end into a running MRI machine with a 4.0 T field.…

A:

Q: The switch in figure has been open for a long time. It is closed at t = 0 s. What is the current…

A: The values of resistance are, The value of inductance is The source voltage is

Q: what will be the value of I, just after the switch is closed 4Ω S 12V 7nF

A: As the switch is closed the capacitor starts charging and allows current to flow through it, at t=0…

Q: An array of solar panels produces 8.65 A of direct current at a potential difference of 148 V. The…

A: Given: A solar panel produces a current of 8.65 A at a potential difference of 148 V.  The…

Q: 7. If the current flowing through the wires is given as i(t) = I, sin(@t), find an expression for…

A:

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.