Find the current in the loop at t = 1.5s Express your answer to two significant

Question

Find the current in the loop at t = 1.5s Express your answer to two significant figures and include the appropriate units A 4.0-cm-diameter loop with resistance 0.14 S2 around a 2.0- cm-diameter solenoid. The solenoid is 14 cm long, has 100 turns, and carries the current shown in the graph. A positive current is cw when seen from the left. (Figure 1) I(1.5)6.44 10A SubmitPra Previous Answers Request Answer Incorrect; Try Again; 5 attempts remaining Figure 1 of 1 Part C L1 (A) 20 Find the current in the loop at t 2.5s Express your answer as an integer and include the appropriate units 4.0 cm 2.0 cm r (s) 20 1(2.5)= 1 Value Units Submit Request Answer

Explanation / Answer

part A)

at t = 1.5 s

di/dt = (20 - (-20))/1 = 40 A/s

di/dt = 40 A/s

induced current = rate of change in magnetic flux/resistance of coil

induced current = 4pi *10^-7 * 100/.14 * 40 * pi * (0.02/2)^2/(0.14)

induced current = 8.06 *10^-5 A

the induced current is 8.06 *10^-5 A

part C) at t = 2.5 s

the as the current in the solenoid is not changing

the induced current will be ZERO

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