Suppose a conducting loop consisting of a half circle of radius of 0.20 m and 3 straight sections. The half circle lies in a uniform magnetic field that is directed out of the page; the field magnitude is given by B = 4.0t2 + 2.0t + 3.0, with B in teslas and t in seconds. An ideal battery with emf 2.0 V is connected to the loop. The resistance of the loop is 2.0 ohms. What are the magnitude and direction of the emf induced around the loop by field B at 10s? What is the current in the loop at 10s

Suppose a conducting loop consisting of a half circle of radius of 0.20 m and 3 straight sections. The half circle lies in a uniform magnetic field that is directed out of the page; the field magnitude is given by B = 4.0t2 + 2.0t + 3.0, with B in teslas and t in seconds. An ideal battery with emf 2.0 V is connected to the loop. The resistance of the loop is 2.0 ohms. What are the magnitude and direction of the emf induced around the loop by field B at 10s? What is the current in the loop at 10s

Similar questions

The magnetic field inside a superconducting solenoid is 4.50 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determine the magnetic energy density in the field.
L R = 5.00 Q X Xix x 1 |X X X X R P = FexV =8.50 J/s Fext W X xx x X X X X X X X X A rectangular wire loop of length L, width w, is pulled out of a constant, uniform magnetic field with constant velocity v. The loop has a resistance R. The magnetic field of magnitude B, points into the plane of the paper, and is confined to the rectangular region shown above. Work must be done on the loop at the rate of P, to move it through the magnetic field at constant velocity. Find the magnitude of the emf, & and the current I for the loop.
. A solenoid has radius 5.80 mm, length 11.0 cm, 5000 turns, and is placed with its axis of symmetry along the x-axis, through the origin. A vector normal to the opening of the solenoid points to the right. We measure the resistance of the solenoid to be 14.0 Ω. The solenoid is in a region where the temperature is 49.0°C and initially, there is an external magnetic field of 0.30 T in the +x direction. Then the magnetic field is turned off and drops to 0 T over 50.0 milliseconds a. What is the magnitude of the average induced emf during the 50.0 milliseconds while the magnetic field magnitude decreases to 0? b. What is the direction of the induced current, as viewed from the right? Answer clockwise, counterclockwise, or zero and show work or explain in words. c. What is the magnitude of the induced current? d. What is the magnitude and direction of the induced magnetic field?
W L X X X X X X X X X X X X X X X X X XX XXXX B 18 X X X X X X X X LB At t=0, a rectangular coil of resistance R = 2 ohms and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.6 T directed into the screen as shown. The length of the region containing the magnetic field is LB = 15 cm. The coil is observed to move at constant velocity v = 5 cm/s. What is the force required at time t = 0.8 sec to maintain this velocity? F(0.8 sec) = N Submit
A generator is designed to produce a maximum emf of 190 V while rotating with an angular speed of 3600 rpm . Each coil of the generator has an area of 1.8×10−2 m2 . If the magnetic field used in the generator has a magnitude of 4.3×10−2 T , how many turns of wire are needed? Express your answer using two significant figures.
Find the flux of the Earth's magnetic field of magnitude 5.00 ✕ 10-5 T, through a square loop of area 30.0 cm2 for the following. (a) when the field is perpendicular to the plane of the loop T·m2(b) when the field makes a 30.0° 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 circuit is made with a resistor of resistance 25 ohms and a movable bar with length 15 cm moving to the left with speed 8 m/s. The whole circuit is in a magnetic field B = 1.5 T (into page). Use this set up to answer the following questions. What is the magnitude (no negative answers) of the power delivered to the resistor in watts? Answer to 4 decimal places.
A flat coil of wire consisting of 15 turns, each with an area of 53 cm², is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 3 T to 8 T in 3.4 s. If the coil has a total resistance of 0.3 ohms, what is the magnitude of the induced current in amperes?
It is desired to construct a solenoid that will have a resistance of 4.15 2 (at 20°C) and produce a magnetic field of 4.00 x 10-2 T at its center when it carries a current of 5.00 A. The solenoid is to be constructed from copper wire having a diameter of 0.500 mm. If the radius of the solenoid is to be 1.00 cm, determine the following. (The resistivity of copper at 20°C is 1.7 x 10-8 0 • m.) (a) the number of turns of wire needed to build the solenoid turns (b) the length the solenoid should have cm
You wish to construct a solenoid with a diameter of 2.00 cm that will produce a magnetic field of 3.40 x 10-2T at its center when a current of 12.0 A is passing through the coils. You want the resistance of the coil wire to be 5.80 N. The resistivity of the wire used is 1.70 x 10-8 N •m (at 20.0°C), and you are using a wire that has a cross sectional area of 3.14 × 10-8 m2. (Note that this solenoid may not necessarily be so tightly wound that the adjacent loops of wire will touch each other. Nonetheless, you may assume that it behaves like an ideal solenoid.) Determine the following. (a) number of turns needed on the solenoid turns (b) length of the solenoid