-at The magnetic flux through the loop shown in the accompanying figure varies with time according to moet sin (wt), where Po= 1 x 10-3 T-m², a = 1 s¹, and w = 120 rad/s. What are the direction and magnitude of the current through the 5-0 resistor at (a) t = 0; (b) t = 2.17 x 10-2 s, and (c) t = 3.00 s?

-2t The magnetic flux through the loop shown in the accompanying figure varies with time according to , = 8.00e sin(150nt), where m is in milliwebers. What are the magnitude and direction of the current (in A) through the 5.00 Q resistor at the following times? 5.0 N B (a) t = 0 s magnitude A direction ---Select--- (b) t = 2.17 × 10-2 s magnitude A direction ---Select--- (c) t = 0.5 s magnitude A direction ---Select---

An 820 turn wire coil of resistance 30.00 is placed around a 12500 turn solenoid, 5.60 cm long, as shown in the figure below. Both coil and solenoid have cross-sectional areas of 1.40 x 10 m². 60.0 V 14.00 w 12 500 turns Re 820 turns (a) How long does it take the solenoid current to reach 63.2% of its maximum value? (No Response) ms (b) Determine the average back emf caused by the self-inductance of the solenoid during this interval. (No Response) V (c) Determine the average rate of change in magnetic flux through the coll during this interval. (No Response) V (d) Determine the magnitude of the average induced current in the coil. (No Response) A

The magnetic flux through the loop shown in the accompanying figure varies with time according to -3 Φm Poe at sin(wt), where Do 3.5 × 10-³ Tm², a = 3 s¹, and w = 120 rad/s. What are = B the direction and magnitude of the current through the 5-№ resistor at (a) t = 0; (b) t = 2.17 × 10-² S, and (c) t = 3.00 s? 04 = a. Current flows down b. Current Select an answer c. Current Select an answer Hints Review Section 13.2 Lenz's Law for Lenz's Law, an intuitive rule for determining the direction of induced current flow. For the given description of this problem (positive direction for magnetic field is defined as pointing out of page), what does positive dom/dt mean for direction of current flow in the loop? What does negative døm/dt mean? Take care in taking derivative of m(t) and review Section 13.1 for induced voltage if needed. ' 5.0 Ω O with 263.9 ✓ with ✓ with mA at t = 0. mA at t = 2.17 × 10-² S. mA at t = 3.00 s.

Problem 7: Part (a)  Express the current induced in the loop, I, in terms of ε and R.  I = ______ Part (b)  Calculate the value of I, in amperes. I = ______

The magnetic flux through the loop shown in the accompanying figure varies with time according to Pm = Poe at sin(wt), where = 3 x 10-³ T m², a = 5 s¹, and w = 120 rad/s. What are the direction and magnitude of the current through the 5-0 resistor at (a) t = 0; (b) t = 2.17 x 10-2 s, and (c) t = 3.00 s? Hints tm Sok Pro a. Current flows down b. Current flows up c. Current flows down v Question Help: Message instructor Submit Question with with with ' 5.0 Ω mA at t = 0. mA at t= 2.17 x 10-2 mA at t = 3.00 s. S.

How much current must pass through a horizontal power transmission cable in order for the magnetic field at a location 21 m directly below it to be equal to the Earth's magnetic field, which is approximately 8.0 x 10-5 T? Express your answer to two significant figures and include appropriate units. Value Units ?

- at &m = - 2 The magnetic flux through the loop shown in the accompanying figure varies with time according to Poe sin(wt), where Do = 4 × 10-³ T · m², a = 5 s-¹, and w = 120 rad/s. What are the direction and magnitude of the current through the 5-0 resistor at (a) t = 0; (b) t = 2.17 × 10¯ s, and (c) t = 3.00 s? ' 5.0 Ω Hints mA at t = 0. a. Current mA at t b. Current mA at t c. Current ●tm B Select an answer Select an answer Select an answer with with with - 2 = = 2.17 × 10- S. = 3.00 s. -