Electricity and Magnetism Answers

Why electric field and magnetic field H and propagation constant they are mutually perpendicular to each other

Let the whole xy planet (z = 0) have charge density σ1 = 10 nC / m2 and the entire xz plane (y = 0) have charge density σ2 = -10 nC / m2.
Find the electric field (vector) in the points
a) (x, y, z) = (1,1,1) m
b) (x, y, z) = (-1, -1, -1) m

Let y=mT+C, where C is resistance, T is temperature and m is the temperature coefficient. The dimension of y is
2 points
MLT⁻¹Q⁻²
ML²TQ⁻²
ML²T⁻¹Q⁻²
ML²T⁻²Q⁻²

A straight line segment of length L (see Figure below) carries a uniform line charge
λ. Find the electric field a distance z above one end of the straight line. Indicate the
direction of the electric field vector. Check that your formula is consistent with what
you would expect for the case z  L.

A rectangular coil of 70 cm length , 10 cm width consists of 9 turns and carries 0.1 amperes current is hanged to a scale pan ehere its length is in a vertical position and lower part is perpendicular to a uniforn magnetic field so balance is obtained . When the current is reversed it's needed to add 8.78 grams to the other side to restore balance again find the magnetic flux denisty given that g= 10 m/s^2

An energy of 5.35eV is stored by a molecule undergoing a circulatory motion with an angular momentum of 0.5kgm²s-¹, determine its moment of inertia.

A Plane travelling towards west at speed of 1800 km/hour.what is the voltage difference developed between the ends of wings having a span of 25 meter, if the earth magnetic field at the location has a magnitude of 5×10^2 T and the dip agle is 30°

What exactly is a charge?

Two charges separated by 1 m exert a 1.0-N force on each other. If the charges are pushed to 0..50-m separation, what will be the force on each charge?

Aconducting sphere of radius 10 /cm has an unknown charge.if the electric fild 15 /cm from the center of the sphere has the magnitude 3.0*10000 N/C andisdirected radially inward ,what is the net charge on thesphere?