Electricity and Magnetism Answers

An infinite solenoid (n turns per unit length, current I ) is filled with linear material of susceptibility χm. Find the magnetic field inside the solenoid.

A proton travels at 1.2x10^7 m/s in a plane perpendicular to a uniform 0.020T magnetic field. Give a quantitativ description of its path

Check the validity of the following two equations to express an

electromagnetic wave.

E = k Eosin(ky+ wt) ;B = i Bosin(ky + wt)

Find the volume charge density associated with a field given by D= (xy²)i + (yx²)j + (z) C/m²

The sound of the explosion is heard 1920 metres away 6.0 seconds after the explosion has happened.

Calculate the speed of sound in this air.

Josh stored an electric potential energy of 2.5j in a vacuum of 1.00m3 by a field E. If the field is reduced to 0.25 of its initial value, how much energy is stored per cubic meter?

A proton moves at 4.45 × 10⁷ m/s perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius of 0.09 m. What is the field strength? (m_proton = 1.6726 × 10^-27 kgs and q=1.602×10⁻¹⁹ C)

A solenoid is 0.30 m long with 103 turns per meter and carries a current of 5.0 A. what is

the magnitude of the magnetic field at the center of this solenoid?

A 9 V battery is connected in series with a 10 resistor. What is the current in the circuit, to the nearest tenth of an ampere?

A car headlight filament is made of tungsten and has a cold resistance of 0.451 ohms. If the filament is cylindrical in nature and is 3.6m long. What is its cross-sectional area?