6. A rod slides along conducting rails which are connected to a resistor (R=2 N). The length of the bar is 0.5 m and a uniform magnetic field of 1.45 T is applied perpendicular, pointing outward. A force is pulling the bar at 6 m/s. F R a) What is the induced emf in the loop? b) What is the current induced in the bar? Give value and direction (counterclockwise/ clockwise) c) What force is required to move the bar?

A circular loop with a radius of 2.5 m rests horizontally inside a uniform magnetic field of 0.9 T in a down direction. What is the induced emf when the magnetic field drops to zero in 0.75 s? O a. 9.40 V O b. 23.6 V O c. 34.2 V O d. 17.5 V

A 65 turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.30 T field, starting with the normal of the plane of the coil perpendicular to the field. Assume that the positive max emf is reached first. a. What (in V) is the peak emf? b. At what time (in s) is the peak emf first reached? c. At what time (in s) is the emf first at its most negative? d. What is the period (in s) of the AC voltage output?

the loop is A ab The figure below shows a rectangular loop with a resistance of 6.7 2. The area of 0.0026 m². The magnetic field throughout the region is A = 48 T/s. How much current is induced in the loop, AB increasing at a rate of in units of milli-Amps (mA)? 24,96,91,88 X X Your Answer: Answer x X CO x X X * X X x X B

R OF е Fapp Figure P20.18 2003 Thomson Brooks Cole (c20p18) Consider the arrangement shown in Figure P20.18. Assume that R = 7.00 £2 and I = 1.00 m, and that a uniform 1.60-T magnetic field is directed into the page. At what speed should the bar be moved to produce a current of 0.400-A in the resistor?

1. The conductive bar m = 45g starts moving from rest, the magnetic field B = 2.8T, the length of bar inside of B field L=22cm and the resistance of the bulb R=2.292. What is the induced emf E on the bar when it reaches the largest speed? Find the largest speed of the bar. 2. Find the induced current direction in the loop. O D D O Q 6 O S 0 RI O O Secondary circuit O C O turns, 1₂ = 3. The primary coil with N₁ = 6400 turns 1₁ = 12cm, the secondary coil with N₂ = 1400 6.0cm, r₁ r₂ = 2.4cm. E = 12V, adjustable R changes from 1652 to 480 in 230ms, R₁ = 2202. Find the current of R₁ and direction. (Resistance of coils can be ignored and no magnetic flux loss) O Primary circuit

Suppose a 57-turn coil lies in the plane of the page in a uniform magnetic field that is directed into the page. The coil originally has an area of 0.270 m2. It is stretched to have no area in 0.110 s. What is the magnitude of the induced emf if the uniform magnetic field has a strength of 1.40 T? What is the direction of induced emf? CCW CW

1. Recall the induction example from lecture in which a resistanceless metal bar with length & slides to the right on metal rails with a constant speed v and the metal rails are connected to a resistor R. The entire system is placed in a uniform constant magnetic field with magnitude B pointing out of the screen. е R a) Use Lenz's last to determine the direction in which the induced current flows. b) In lecture we simply assumed the bar moves with constant speed v. Show that an external force is needed to ensure the bar travels right with constant speed and determine the magnitude of this force (Hint: there will be a magnetic force on the bar due to the current flowing through it). c*) Show that the power dissipated in the resistor equals the rate at which work is done on the bar by the external force.

Ck H 4 ← 1 Q A Z O8 https://www.webassign.net/web/Student/Assignment-Responses/submit?dep=32014984&tags=autosave#Q4 目☆ At what speed (in meters per second) must the sliding rod in the figure below move to produce an emf of 1.00 V in a 1.65 T field directed perpendicular to the rods and into the page, given the rod's length is 28.5 cm? C 078²9 alt 2 W S m/s # "3. th G E D Application of Lenz's law Ⓡ C ® Ⓡ ® ® 5 Ⓡ Ⓡ Ⓡ Ⓡ RO B. Ⓡ & 8 8 ® R 4 R F RHR-2 O O ® V ® % Ⓡ Ⓡ Ⓡ O OB O 8 5 B₂ T H Q Search G 8 Ⓡ B O 8 8 Ax+ O AA= (AX Ⓡ @ 3R #Equivalent circuit Ⓡ Ⓒincreasing NO 6 Ⓡ 8 @ Y 8 H @ -0 & 8 & 7 AHR-1 L Pie U 12 J N 8 M 1 K ( < 9 O alt PO 72x@ لالالالال ctri ? 1 " + Protect your privacy with and Fingerprint Reader "prt sc pause 1 4 backspace ME delete for those on-the-go 1 enter HP ENVY x360 Get more done with the latest Intel® Core™ processor. t shift home lock 4 hp 1 end BANG & OLUFSEN 3-way micro-edge display Audio by Bang & Olufsen end 1 8 5 O 2 ** BANG & OLUFSEN py up 6:31 PM 7/3/2023 A…

Suppose the 50 turn coil in the figure below lies in the plane of the page and originally has an area of 0.230 m². It is stretched to have no area in 0.100 s. X Bin XBin X V What is the direction? clockwise X counterclockwise X X What is the magnitude (in V) of the average value of the induced emf if the uniform magnetic field points into the page and has a strength of 1.75 T? X X 192 X