Electricity and Magnetism Answers

if you have two coils both have currents in anticlock wise direction the what you can say about the force between them (attraction or repulsion ) and how?

Two particles carrying equal charges move parallel to each other with speed 150 km/s. If F(1) and F(2) are magnetic and electric forces between two charged particles then the ratio of F(1)/ F(2) is

Ans 25×10^-8

how did the distance of the sensor from the electromagnet affect the reading on the sensor

Determine the effective capacitance of the following combination of capacitors given

that the capacitance of each capacitor is 3 μF.

Two identical pulses each of magnitude 12 V and width 2 us are incident at t = 0 on a lossless transmission line of length 400 m terminated with a load. If the two pulses are separated 3 µs (similar to the case of Figure 11.53) and u = 2 X 108 m/s, when does the contribution to VL(€, i) by the second pulse start overlapping that of the first?

What must you have for an electromagnet to work that you don’t need for a regular magnet?

What is the value of magnetic dip at a place where BH= 0?

The length of a 500 turn solenoid is 3 cm . Calculate the magnitude at the center of magnetic field of the solenoid when it carries a 0.6 A current.

Calculate the electric field associated with a LASER beam having energy density 10^6 J/cm^2

In a certain medium, E = 10 cos (108t — 3y) ax V/m. What type of medium is it?