
Ex2.(10 pts) A circular loop of radius 1.0 cm is placed around a long-ideal solenoid of...
A solenoid of length 40 cm has 380 turns of radius 2.2 cm. A tightly wound coil with 12 turns of radius 5.8 cm is placed around the solenoid. The axes of the coil and solenoid coincide. Find the emf induced in the coil if the current in the solenoid varies according to I=5.8sin(50πt) A. Answer: ______ cos(50πt) mV
A very long solenoid with a circular cross section and radius
r1= 1.20 cm with ns= 230 turns/cm lies inside
a short coil of radius r2= 4.80 cm and Nc= 25
turns.
A) If the current in the solenoid is ramped at a constant rate
from zero to Is= 1.10 A over a time interval of 45.0 ms,
what is the magnitude of the emf in the outer coil while the
current in the solenoid is changing?
B) What is...
A circular coil of 310 turns and radius 4.50 cm is placed inside and coaxial to a solenoid with 350 turns/m. If the current in the solenoid is represented by the equation I = a(1 − e−bt) where a = 20.5 A and b = 1.80 s−1, determine the magnitude of the induced emf in the coil when t = 1.50 s.
5) A solenoid comprises 500,000 turns of wire and is 10 cm long
and 1.0 cm in radius.
a) Find the resultant magnetic field inside the coil if a current
of 1 μA flows through the wire.
b) How would this change if the core is filled with mumetal (μ =
300 μ0 ).
6) The solenoid of Q5 is placed in a region where the perpendicular
magnetic field strength is varying sinusoidally by 20 μT at a rate
of...
A circular coil of 10 turns and radius 1.0 cm is placed with its plane oriented at 90 degrees to a magnetic field of 2.0 T. The field is now increased at a steady rate, reaching a value of 5.0 T after 10 seconds. What emf is induced in the coil?
Question 2 [7 marks] A circular loop with a radius of 6cm and resistance of 0.020 is placed around a solenoid as shown. The solenoid has a radius of 2cm, 4000 turns, length of 0.5m, and a counterclockwise current, is, that changes with time as shown in the graph below. a) [5 marks] Find the current, op induced in the circular loop b) [l mark] Calculate the inductance, L, of the solenoid. b)[ mark] What is the required voltage, V,...
wo ·XXI. INDUCTANCE A long solenoid has 150 turns/m and a radius of 5 cm. A coil loop (radius '12 cm) is placed around the solenoid (such that they are concentric) and the current in the solenoid is decreased steadily at 20 A/s. What is the magnitude of the induced electric field in the loop? a) 244 μV/m b) 39.2 uV/m c) 42.1 μV/m d) 51.7 μν/m
Problem 3 Part A A copper wire with resistance 0.010 Ω is shaped into a complete circle of radius R 10 cm and placed in a long solenoid so that the axis of the solenoid and the axis of the wire loop coincide. The current in the solenoid is turned on and then slowly decreased. The magnetic field strength is initially B 0.750 T and subsequently decreases in time at the constant rate -0.035 T/s. (a) Calculate the induced emf...
A circular conducting loop with radius 2.70 cm is placed in a uniform magnetic field of 0.850 T with the plane of the coil perpendicular to the magnetic field as shown. ! The magnetic field decreases to 0.300 T in a time interval of 25.0 ms. What is the average induced emf in the loop during this interval?
A long solenoid has 470 turns per meter. A coil of radius 1.1 cm with 30 turns of insulated wire is placed inside the solenoid, its axis parallel to the axis of the solenoid. (a) What is the mutual inductance? H (b) What emf will be induced around the coil if the current in the solenoid winding changes at the rate of 180 A/s? V