A circular coil lies flat on a horizontal table. A magnet bar is held above the table. There will be an induced current in the coil if (select ALL that apply): A the magnet is held fixed and the radius of the coil in decreased. B the magnet is moved away from the table, with the south pole facing the table. the magnet is held fixed and the radius of the coil in increased. D the magnet is dropped with the north pole facing the table. E the magnet is moved away from the table, with the north pole facing the table. F the magnet is held fixed. G the magnet is dropped with the south pole facing the table. H the magnet is held fixed and the coil is rotated while laying flat on the table.

A stationary square coil of area 0.1 m2 is brought over time of 2 s into the magnetic field 9.1 T with its plane perpendicular to the magnetic field. The coil has 2112 turns. Calculate the magnetic flux linkage through the coil. Give your answer in SI units.

*Chapter 30, Problem 033 GO The figure shows a rod of length L 8.84 cm that is forced to move at constant speed v 4.19 m/s along horizontal rails. The rod, ralls, and connecting strip at the right form a conducting loop. The rod has resistance 0.489 ; the rest of the loop has negligible resistance. A current / 145 A through the long straight wire at distance a = 14.9 mm from the loop sets up a (nonuniform) magnetic field throughout loop. Find the (a) magnitude of the emf and (b) current induced in the loop. (c) At what rate is thermal energy generated in the rod? (d) What is the magnitude of the force that must be applied to the rod to make it move at constant speed? (e) At what rate does this force do work on the rod? B. (a) Number 71 Units (b) Number -2 Units (c) Number 13 Units (d) Number 4 Units (e) Number s Units X XX

The figure represents a thin conducting loop placed in a uniform magnetic field directed perpendicular to the plane of the paper and inwards. Some of the following questions pertain to it. (Select True or False). False v The size of the voltage induced in a coil through which a magnet moves is affected by the rate at which the magnet moves. The size of the voltage induced in a coil through which a magnet moves is affected by the strength of the magnet. True False vA current carrying conductor passes through the centre of a metal ring in a direction perpendicular to its plane. If the current flowing through the conductor increases, no emf is induced in the ring. True v An emf is induced in a long, but not infinite, solenoid by a bar magnet that moves inside it along the solenoid axis. True v In Faraday's Law of induction, the induced emf is independent of the resistance in the coil or circuit. True v If the magnitude of the magnetic field starts decreasing, the resultant induced current…

Refer To: Ref 22-2 Which one of the following statements concerning this situation is true? Since the circuit moves with constant speed, the force F does zero work. The induced current flows clockwise around the circuit. As the circuit moves through the field, the field does work to produce the current. If the circuit were replaced with a wooden loop, there would be no induced emf. The temperature of the circuit remains constant.

A motor run by a 7.8-V battery has a 15-tum square coil with sides of length 5.4 cm and total resistance 202. When spinning, the magnetic field felt by the wire in the coil is 0.028 T. ▼ Part A What is the maximum torque on the motor? Express your answer to two significant figures and include the appropriate units. T=4.7.10 4 μA Provide Feedback N Submit Previous Answers Request Answer MacBook Air m X Incorrect; Try Again; 3 attempts remaining 2 G Revie

A rectangular coil with resistance R has N turns, each of length l, and width B w as shown in Figure. The coil moves into a uniform magnetic field B with x x constant velocity v. What are the magnitude and direction of the induced current on the coil as it enters the magnetic field? Option1 NBwv/R Option2 Option3 Blv/R Option4 NBlwv/R Option5 NBlv/R counterclockwise clockwise clockwise counterclockwise clockwise Blwv/R

What is the magnetic flux through the loop shown in the figure below if a = 27cm. Assume the area vector A is pointed into the page. Answer in the units of Wb

The force on a wire is a maximum of 4.50×10−2 NN when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on. A). What type of magnetic pole is the top pole face?   B). If the pole faces have a diameter of 19.0 cm , estimate the current in the wire if the field is 0.180 T.   C). If the wire is tipped so that it makes an angle of 12.0∘ with the horizontal, what force will it now feel? [Hint: What length of wire will now be in the field?]   Please show all steps :)  THANK YOU

A metal rod completes a circuit while sliding without friction on a pair of rails in a uniform magnetic field. B is uniform sliding rod The mass of the rod is 382g. The resistor has a value of 4.04 ohm. The magnetic field has a strength of 7.77T and the distance between the rails is 4.61m. What is the downward force (in Newtons) pulling on the rail when it moves downwards with a constant velocity 2.31 m/s? (Note that the magnetic field created by the current in the circuit is small compared to the external field and can be neglected.)