View the step-by-step solution to:

mcgill (mam8474) - HW 23-1 - Antoniewicz - (57050) This print-out should have 16 questions. Multiple-choice questions may continue on the next column...

can you help me with problems 3 thru 9
mcgill (mam8474) – HW 23-1 – Antoniewicz – (57050) 1 This print-out should have 16 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 of 2) 5.0 points Given: B = b t , where b = 0 . 6 T / s (lower fgure). Consider a changing magnetic feld (From B to B , upper fgure) within a circle oF radius 2 m. The magnetic feld is pointing into the page and its magnitude is increasing. 2 m B B B 2 m B B B v t v B 0 B B ±ind the direction oF the induced emF E ind . 1. into the page 2. out oF the page 3. counter-clockwise 4. clockwise 002 (part 2 of 2) 5.0 points ±ind the magnitude oF the induced electric feld E ind on the perimeter oF the circular magnetic feld. Answer in units oF V / m 003 (part 1 of 7) 6.0 points In the fgure below oF coil oF wire with 250 turns is connected to a power supply, and a current runs in the coil. A single loop oF copper wire is in the x y plane, with its axis on the same line as the axis oF the coil. The loop and the coil are stationary. The radius oF the coil is 9 cm, and the radius oF the loop is 4 cm. The center oF the loop is 2 . 2 m From the center oF the coil. At time t 1 , the conventional current I in the coil is 5 A, and it is not changing. Remember that: μ 0 4 π = 1 × 10 7 N · m / A Power Supply + y x z Loop b P Coil I What is the absolute value oF the magnetic ²ux through the loop at time t 1 ? Answer in units oF T · m 2 004 (part 2 of 7) 3.0 points What is the direction oF the electric feld at location P in the copper wire oF the loop at time t 1 ? (Remember that at this time the current in the coil is constant.) 1. a 0 , 1 , 0 A 2. a 0 , 1 , 0 A 3. a 0 , 0 , 1 A 4. a 1 , 0 , 0 A 5. There is no electric feld inside the copper loop. 6. a− 1 , 0 , 0 A 7. a 0 , 0 , 1 A 005 (part 3 of 7) 3.0 points
mcgill (mam8474) – HW 23-1 – Antoniewicz – (57050) 2 At a later time t 2 , the current in the coil begins to decrease. Now what is the direction of the electric Feld in the loop at point P? 1. a 0 , 0 , 1 A 2. a 0 , 0 , 1 A 3. a− 1 , 0 , 0 A 4. a 1 , 0 , 0 A 5. a 0 , 1 , 0 A 6. a 0 , 1 , 0 A 7. There is no electric Feld inside the copper loop. 006 (part 4 of 7) 6.0 points At time t 2 , the current in the coil is decreasing at a rate of 0 . 3 A / s. At this time, what is the absolute value of the rate of change of the magnetic ±ux through the loop? Answer in units of V 007 (part 5 of 7) 3.0 points At this time, what is the absolute value of the emf in the loop? Answer in units of V 008 (part 6 of 7) 6.0 points What is the magnitude of the electric Feld at location P , which is inside the wire? Answer in units of V / m 009 (part 7 of 7) 3.0 points Now the wire loop is removed. Everything else remains as it was at time t 2 ; the current is still changing at the same rate. What is the magnitude of the electric Feld at location P ? Answer in units of V / m 010 (part 1 of 2) 5.0 points In the Fgure below, the north pole of a bar magnet points toward a thin circular coil of wire containing 55 turns. The magnet is moved away from the coil, so that the ±ux through one turn inside the coil decreases by 0 . 4 T · m 2 in 0 . 2 s. S N vV What is the average emf in the coil during this time interval? Answer in units of V 011 (part 2 of 2) 5.0 points Viewed from the right side (opposite the bar magnet), does the induced current run clock- wise or counterclockwise? 1. Clockwise 2. There is no induced current. 3. Counterclockwise 4. Not enough information 012 (part 1 of 3) 7.0 points An electron under the in±uence of some central force moves at speed V i in a counter- clockwise circular orbit of radius R . A uni- form magnetic Feld B perpendicular to the plane of the orbit is turned on (see Fgure). B increasing V electron circular path of electron radius R Suppose that the magnitude of the Feld changes at a given rate d B dt . What is the magnitude of the electric Feld induced at the radius of the electron orbit?
Show entire document

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
• -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents