Use Lenz's law to answer the following questions concerning the direction of induced currents. Express your answers in terms of the letter labels a and b in each part of the figure below. R
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- Use Lenz's law to answer the following questions concerning the direction of induced currents. Express your answers in terms of the letter labels a and b in each part of the figure below. (a) What is the direction of the induced current in the resistor R in Figure a when the bar magnet is moved to the left? (b) What is the direction of the current induced in the resistor R after the switch S in Figure b is closed? (c) What is the direction of the induced current in the resistor R when the current I in Figure c decreases rapidly to zero?Use Lenz's law to answer the following questions concerning the direction of induced currents. Express your answers in terms of the letter labels a and b in each part of the figure below. (a) What is the direction of the induced current in the resistor R in Figure a when the bar magnet is moved to the left? O a to b O b to a O The magnitude is zero. (b) What is the direction of the current induced in the resistor R after the switch S in Figure b is closed? O a to b O b to a O The magnitude is zero. (c) What is the direction of the induced current in the resistor R when the current / in Figure c decreases rapidly to zero? O a to b O b to a O The magnitude is zero.Define Lenz’s law and use it to answer the following questions concerning the direction of induced currents. Explain in detaile your answers in terms of the letter labels a and b in each part of Figure. (a) What is the direction of the induced current in the resistor R in Figure(a) when the bar magnet is moved to the right? (b) What is the direction of the current induced in the resistor R immediately after the switch S in Figure(b) is closed? (c) What is the direction of the induced current in the resistor R when the current I in Figure(c) decreases rapidly to zero? Please explain a, b, and c options in detail according to Lenz’s law.
- e br Direction: Solve as directed. Write your answers on the box provided. Find the unknown values of voltage and current in each resistor as shown in the given circuit diagram. 1. The magnetic field of a certain region has a magnitude of 1.50 T, and its direction is along the positive x-axis, as shown in the figure below. 30 сm b. 40 cm 30 сm a. What is the flux across the surface abcd? a b. What is the flux across the surface befc? 50 cm c. What is the flux across the surface aefd? С. d. d. What is the flux across the surface in the shaded volume?di. Consider below diagram Ai Az Volt Volf meleu 2 meten 1 Di D In above diagram an electromagnet is placed between R1 and R2, such that when the electromagnet is turned on magnetic field is generated perpendicular to the plane of circuit (pointing out of the circuit). The flux thus produce are changing with respect to time. The direction of current is chosen because the magnetic flux is increasing w.r.t time. The relations given as : E.dl EMF and flur is B.ds dt Values of circuit parameter are :- - R1 = 20 Ohm, R2 = 150 Ohm and instantaneous current i = 10 mA. Find a) The potential difference between point A1 and D1 also find potential difference point A2 and D 2. b) the potential recorded by both voltmeter 1 and 2 c) the potential across the voltmeter will be same? If yes then how and if not then why.Direction: Solve as directed. Write your answers on the box provided. Find the unknown values of voltage and current in each resistor as shown in the given circuit diagram. Y 1. The magnetic field of a certain region has a magnitude of 1.50 T, and its direction is along the positive x-axis, as shown in the figure below. 30 сm e 40 cm 30 cm What is the flux across the surface abcd? a a. b. What is the flux across the surface befc? What is the flux across the surface 50 cm d С. aefd? d. What is the flux across the surface in the shaded volume?
- This part can be done without the d) previous parts. The figure is repeated from the previous page. For each of the cases below, done individually, indi- cate if the induced current is clockwise (CW), counter- clockwise (CCW), or there is no induced current (NONE). You do not need to justify your answers. ye h pyright 20 A: Decrease a B: Decrease h C: Decrease IWhat is the expression for the magnetic dipole moment of a small loop of current, with the radius of the loop given by r and the current given by 1? Use I for current, r for radius, pi for T. Use * for multiplication and / for division and collect terms using (). Use ^ for exponent, i.e. for æ" write x^n. You can add an optional tip or note related to the prompt like this. Example: To test this example, the correct answer is R_1*R_2/R_3 Submit Previous bux.bracu.ac.bdB INSTRUCTION Solve the following problems. ANSWER ONLY TWO OUT OF THREE QUESTIONS. Show your complete solutions. NOT FOLLOWING OF INSTRUCTIONS will be a deduction of 10 POINTS from the total score. 1.A proton enters a magnetic tield of flux density 1.5 Wb/m² with a vetocity of 2.0 x 107 m/s at an angle of 30° with the field. Compute the force on the proton. 2.A steady current of 2 A in a coil of 400 turns causes a flux of 104 wb to link (pass through) the loops of the coil. Compute the average back emf induced in the coit it the current is stopped in 0.08 seconds. 3. A coil of 50 loops is pulled in 0.020 seconds from between the poles of a magnet, where its area intercepts a flux of 3.1 x 10-4 Wb, to a place where the intercepted flux is 0.10 x 10-4 Wb. Determine the average emf induced.
- A 8-turn generator coil with area 0.155 m^2 rotates in a 1.20 T magnetic field. At what frequency should the coil rotate to produce a peak emf of 150, expressed four sig figs with approp units. Attached are self notes. If you help me with the symbology... I know that f = frequency. I am not at clear the other symbols.Use the worked example above to help you solve this problem. A coil with 21 turns of wire is wrapped on a frame with a square cross-section 2.14 cm on a side. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 0.561 Ω. An applied uniform magnetic field is perpendicular to the plane of the coil, as in the figure. Suppose the magnetic field changes uniformly from 0.540 T to 0.162 T in the next 0.666 s. (a) Compute the induced emf in the coil. = V(b) Compute the induced current.I = A counterclockwise as viewed from above the coilWhat is the slope of your Magnetic Field Strength vs. Current graph? What does this imply about the relationship between these two variables? Please explain in terms of your data and the theory.