An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.30 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.17 cm, and it takes 0.310 s to move it into the field. (a) What average current XA induced in the ring if its resistance is 0.0100 02? (Enter the magnitude in amperes.) (b) What average power is dissipated (in W)? W (c) What average magnetic field is induced at the center of the ring? (Enter the magnitude in teslas.) (d) What is the direction of this induced magnetic field relative to the MRI's field? O parallel O antiparallel O The magnitude is zero.

An aluminum bar moves with a speed 2m/s between two copper roads in a magnetic field of 2T as indicated on the figure. The distance between the cooper roads is 10m. The aluminum bar is always in contact with cooper roads and moves without friction. A voltmeter is coupled between the roads. What is the potential measured by the voltmeter (in volt), if the resistance of the rods and aluminum bar are consider to be negligible?

The small currents in axons corresponding to nerve impulses produce measurable magneticfields. A typical axion carries a peak current of 0. 040 μA. What is the strength of the field at a distanceof 0.9 mm?

An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.10 T field with his fingers pointing in the direction of the field. His wedding ring has a diameter of 2.11 cm, and it takes 0.320 s to move it into the field.   (a)What average current is induced in the ring if its resistance is 0.0100 Ω? (Enter the magnitude in amperes.) A   (b)What average power is dissipated (in W)? W (c)   What average magnetic field is induced at the center of the ring? (Enter the magnitude in teslas.)T

A loop of highly conducting wire is placed in a magnetic field that is increasing out of the page (through the loop) at a rate of 1.80 T/s. If the loop has an area of 0.400m^2, calculate the current flowing in Amps through the 5.00 ohm resistor.

The magnetic field through a single loop of wire 14.0 cm in radius and of 11.5 Ω resistance changes with time as shown in the figure. Calculate the emf in the loop as a function of time. a)What is the emf at t = 1.0 s? For the sign take the loop in the plane of the paper, and the magnetic field out of the paper. Take clockwise to be positive emf.  b)What is the emf at t = 3.0 s?  c)What is the emf at t = 5.0 s?  d)What is the current at t = 1.0 s?

QUESTION 7 Refer to the figure in the previous question. What is the emf induced when a 5.48-cm conducting rod attached to a U-shaped conductor moves at 1.56 m/s perpendicular to a magnetic field of strength 14.9 T? Please write the numeric answer in terms of V (volts). Normal format with 3 SF.

If 24.9 volt power supply is connected to a lamp with resistance 3.6 ohm. What would be the magnetic field induced at a point 8.9 centimeter away from the lamp? The answer is  _______ Tesla.