Induced EMF and current in circular coil due to current carrying solenoid.

See attached file for full problem description.

Biot-savart law: Magnetic field at the center of a uniformly charged rotating hemisphere.

Use the Biot-Savart law to find the magnetic field at the center of the sphere (point P) of the uniformly charged hemispherical shell rotating with angular speed w about its symmetry axis as in the diagram. Start by discussing the direction of . You may not use any results for the magnetic field due to any configuration. ( ...continues

Boundary conditions, dielectric constant

(See attached file for full problem description with proper symbols and equations) --- If there is a field described by the vectors and . These are related by =k where k is a constant. The two vectors are found to satisfy the differential equations 1) =0 2) =0 questions: 1. Using these relations derive the bound ...continues

Set of 25 multiple choice questions on Electricity and Magnetism.

** Please note that the special characters such as symbol for ohms will not appear correctly below. Please refer to the attached file 'Physics Questions 2.doc'. ======================== 1. Which one of the following statements best explains why it is possible to define an electrostatic potential in a region of space that con ...continues

25 Multiple choice questions based on alternating current and EM waves.

(See attached file for full problem description) --- 1. The current in a certain ac circuit is independent of the frequency at a given voltage. Which combination of elements is most likely to comprise the circuit? a. Resistors only b. Inductors only c. Capacitors only d. A combination of inductors and resistors e. A c ...continues

Battery Problem

A battery charger is connected to a dead battery and delivers a current of 6.0 A for 5 hours, keeping the voltage across the battery terminals at 12 V in the process. How much energy is delivered to the battery?

Resistance & Resistivity

Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.20 Ohms. What is the resistance of the copper wire?

Series wiring

A 36.0 Ohm resistor and an 18.0 Ohm resistor are connected in series across a 15.0 V Battery. What is the voltage across- 1) the 36.0 ohm resistor? 2) The 18.0 Ohm resistor?

Series and Parallel Capacitors

(See attached file for full problem description) A 3.00 uF and a 5.00 uF capacitor are connected in series across a 30.0 V battery. A 7.00 uF capacitor is then connected in parallel across the 3.00 uF capacitor. Determine the voltage across the 7.00 uF capacitor. Please include a diagram of the circuit.

Capacitors

Two capacitors (C1 and C2) are connected in series. Show that the sum of the energies stored in these capacitors is equal to the energy stored in the equivalent capacitor. [ Energy stored in a capacitor can be expressed as q^2/(2C) ] Please include diagram.