An MRI technician moves her hand from a region of very low magnetic field strength (B=0) into an MRI scanner's B=1.25T field with her fingers pointing in the direction of the field. Her ring has a diameter of 2.25 cm, and it takes 0.250 s to move it into the field. Find the average induced current in the ring if its resistance is 0.002 Ω? (Enter the magnitude in amperes.) (Hint: Use Faraday's Law of electromagnetic induction)

Q: A square coil of wire of side 3.35 cm is placed in a uniform magnetic field of magnitude 2.25 T, The…

A: a. the magnitude of flux passing through the loop is  ϕB=NBA

Q: What is the peak emf generated by rotating a 1000-turn, 20.0 cm diameter coil in the Earth’s…

A:

Q: How many coils must a loop have with a cross-sectional area of 0.50m? that is pulled through a…

A: E =4V, A = 0.5m2 B = 0.25T, ∆t  = 1sec  The induced emf in the coil is  E = N.BA/∆t N = ∆t.E /BA N =…

Q: An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A: Magnetic field strength is 2T

Q: The figure below shows a 90-turn square coil rotating about a vertical axis a w= 1,410 rev/min. The…

A:

Q: An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A:

Q: The figure attached shows a resistor that is connected in a circuit consisting of a circular loop…

A:

Q: A flexible loop has a radius of 12.0 cm and is in a magnetic field of magnitude 0.150 T. The loop is…

A: Given data The radius of the flexible loop is: R = 12 cm = 0.12 m The magnitude of the magnetic…

Q: A flat, square, 75-turn coil of wire is rotated from having its plane perpendicular to an external,…

A:

Q: A square coil of wire of side 2.90 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: a  Area of square coil A= l2                                          A= 2.902= 8.41 cm2=…

Q: In the setup below, the resistance and the length of the rod are 3.82 Q and 0.231 m, respectively,…

A: Given data: Resistance is R=3.82 ohm Length is L=0.231 m Dissipated power is P=1.1 W Magnetic field…

Q: In one of NASA's space tether experiments, a 20.0 km-long conducting wire was deployed by the space…

A:

Q: A wire loop of radius 0.33 m lies so that an external magnetic field of magnitude 0.35 Tis…

A: Given  Radius of loop r=0.33m Initial magnetic field Bi=0.35T Final magnetic field Bf=0.16 T Time…

Q: A square coil of wire of side 2.50 cm is placed in a uniform magnetic field of magnitude 1.75 T…

A:

Q: A B

A:

Q: The flexible loop in Figure has a radius of 32.1 cm and is in a magnetic field of magnitude 0.150 T.…

A: Magnitude of magnetic field= 0.15T Radius of ring, r = 0.321 Meter Given time= 0.2 sec

Q: A square coil of wire of side 3.95 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A: Given data: Number of turns in the coil, N=32.0 turns Magnetic field, B =2.00 T Side of the square,…

Q: Suppose the long solenoid in the given figure below has 900 turns per meter and cross-sectional area…

A: Given: Number of turns in solenoid, n = 900 /m Cross sectional area, A = 5.5cm2 = 5.5 X 10-4 m…

Q: You are designing a generator to have a maximum emf of 8.0 V. If the generator coil has 200 turns…

A: Given : Maximum emf V = 8.0 V             Number of turns N = 200 turns             Cross sectional…

Q: A magnetic field increases from 0 to 0.30 T in 1.7 s . How many turns of wire are needed in a…

A:

Q: 9. In the figure, the magnetic flux through the loop increases according to the relation OB = 7.20t²…

A: Given: The magnetic flux is 7.2t2+9.4t. The time instant is t = 2.3 s. Here, t is the time.

Q: An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A: Given, Initially ring is in low magnetic field , Bi = 0 magnetic field in the scanner, Bf = 2.00 T…

Q: A square coil of wire of side 2.35 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A:

Q: A coil of wire 8 cm in diameter has 50 turns and is placed in a B field of 1.8 T. If the B field is…

A: ε=N∆ϕ∆t=NA∆B∆t=Nπd2B1-B24∆t=Nπd2B1-B24∆t=503.148 cm1 m100 cm21.8 T-0.6 T40.002 s=151 V

Q: An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A:

Q: The flexible loop in the figure attached has a radius of 14 cm and is in a magnetic field of…

A: radius (r) = 14 cm = 0.14 m Magnetic field strength (B) = 0.14 TTime taken (t) = 0.21 seconds final…

Q: A coil with an inductance of 2.0 H and a resistance of 10ohm is suddenly connected to an ideal…

A:

Q: You are designing a generator to have a maximum emf of 8.0 V. If the generator coil has 200 turns…

A: Given, Number of turns,N=200 Cross-sectional area,A=0.03 m2 Magnetic field,B=0.03 T Maximum…

Q: A circular coil with a diameter of 12.75 cm is made up of thin wire wound into 445 turns. It is…

A: Given  Diameter = 12.75 × 10-2 m  Number of turn N = 445  Rate of change of magnetic field = dB/dt =…

Q: A square coil of wire of side 2.85 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A: (a) Write the formula for the area of a rectangular coil.

Q: An MRI technician moves his hand from a region of very low magnetic field strength into an MRI…

A:

Q: A square coil of wire of side 3.90 cm is placed in a uniform magnetic field of magnitude 2.25 T…

A:

Q: A coil with an inductance of 2.6 H and a resistance of 8.2 Ω is suddenly connected to an ideal…

A:

Q: A square coil of wire of side 3.75 cm is placed in a uniform magnetic field of magnitude 1.75 T…

A:

Q: A wire 0.2 m long moves at a constant speed of 5 m/s in a direction that is 37o with respect to a…

A:

Q: A wire loop that encloses an area of 15 cm? is perpendicular to a magnetic field of 0.10 T. If the…

A: given data area = 15cm2 magnetic field = 0.10 T field is drops to 0.04 T in 0.2 s average emf…

Q: A square coil of wire of side 3.40 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A:

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.