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Calculate the peak voltage of a generator that rotates its 200-turn, 0.100 m diameter coil at 3600 rpm in a 0.800 T field.

An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. Find the average emf induced in his wedding ring, given its diameter is 2.20 cm and assuming it takes 0.250 s to move it into the field.

Calculate the size of the magnetic field 20.0 m below a high voltage power line. The line carries 450 MW at a voltage of 3.0X105V.

The hot and neutral wires supplying DC power to a light-rail commuter train carry 800 A and are separated by 75.0 cm. What is the magnitude and direction of the force between 50.0 m of these wires?

(a) What is the maximum torque on a 150-turn square loop of wire 18.0 cm on a side that carries a 50.0-A current in a 1.60-T field? (b) What is the torque when θ is 10.9?

A DC power line for a light-rail system carries 1000 A at an angle of 30.0 to the Earth’s 5.00X10-5 T field. What is the force on a 100-m section of this line?

What is the speed of a supersonic aircraft with a 17.0-m wingspan, if it experiences a 1.60-V Hall voltage between its wing tips when in level flight over the north magnetic pole, where the Earth’s field strength is 8.00X10-5 T?

A cosmic ray electron moves at 7.50X106 m/s perpendicular to the Earth’s magnetic field at an altitude where field strength is 1.00X10-5 T . What is the radius of the circular path the electron follows?

A cosmic ray proton moving toward the Earth at 5.00X107 m/s experiences a magnetic force of 1.70X10-16 N. What is the strength of the magnetic field if there is a 45 angle between it and the proton’s velocity?

The timing device in an automobile’s intermittent wiper system is based on an RC time constant and utilizes a 0.500 F capacitor and a variable resistor. Over what range must R be made to vary to achieve time constants from 2.00 to 15.0 s?

Using the exact exponential treatment, find how much time is required to discharge a 250 F capacitor through a 500  resistor down to 1.00% of its original voltage.

Find the currents flowing in the circuit in the Figure below. Explicitly show how you follow the steps given in the Problem-Solving Strategies for Series and Parallel Resistors.

(a) What is the terminal voltage of a large 1.54-V carbon-zinc dry cell used in a physics lab to supply 2.00 A to a circuit, if the cell’s internal resistance is 0.100 ? (b) How much electrical power does the cell produce? (c) What power goes to its load?

Show that if two resistors R1 and R2 are combined, and one is much greater than the other : (a) Their series resistance is very nearly equal to the greater resistance R1. (b) Their parallel resistance is very nearly equal to smaller resistance R2.

PHYS2 19 Power of electron beam

PHYS2 18 Resistance and Temperature

PHYS2 17 Resistivity and Resistance

PHYS2 16 Ohm's Law

PHYS2 15 Current and charge

PHYS2 14 Energy stored on a capacitor

PHYS2 12 Capacitance

PHYS2 13 Capacitor Circuit

PHYS2 11 Voltage of a capacitor R

PHYS2 10 Electric field strength between two plates

PHYS2 9 Electric field between two conducting plates

PHYS2 8 Voltage of a charge

PHYS2- 7 Electric potential Energy and voltage

PHYS2 5 Electric field of point charges at the center of equilateral triangle

PHYS2 6 Electric field and gravitational acceleration E