5. A circular loop is constructed from a flexible, conducting wire of resistance R. The wire is being cooled such that it's radius is shrinking at a rate r(t) = ro where ro is the initial, uncooled radius, T is a constant, and t is the time. The loop is perpendicular to a uniform, constant magnetic ficld B (pointing up through the loop, i.e., out of the page). (a) Find an cxpression for the induced voltage in the loop as a function of time. (b) What is the induced current in the loop? (c) In what direction (clockwise or counterclockwise) is the induced current?

A piece of copper wire has a resistance per unit length of 5.12 × 10-3/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.149 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil.

A piece of copper wire has a resistance per unit length of 5.40 × 10³/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.118 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil. Number Units

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…

An clectron enters a region of space containing a uniform 1.25 x 10-5 T magnetic field. Its speed is 1.5 x 10° m/s when it enters perpendicularly to the ficld. Under these conditions, the clectron undergoes circular motion. (a) Find the radius r of the electron's circular path. (b) Find the frequency f of the circular motion. 2.

A magnetic core with an air gap has a permeability that can be considered infinite. It has a coil of wire wrapped around the core. The following is known about the core: A = 4(10-4) m² (Cross sectional area of the core) N = 500 (turn in the coil) 1g = 2 mm How much current is needed in the coil to create a force of 8 N closing the gap? O 0.714 A O 1.41 A O 0.509 A O 2.02 A

Find the flux of Earth's magnetic field of magnitude 5.00 x 10-5 T through a square loop of area 40.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop T:m2 (b) when the field makes a 25.5° angle with the normal to the plane of the loop T.m2 (c) when the field makes a 90.0° angle with the normal to the plane T.m2

A piece of copper wire has a resistance per unit length of 4.63 × 10/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.208 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil. Number i Units >

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…

A straight conductor of fixed length / is moving at 45 degrees to a uniform magnetic field of strength B with constant speed v. Calculate v, if B=9.7 T, 1=2.5 m and electromotive force e 5 V. Give your answer in Sl units. Answer: m/s