Consider a parallel plate capacitor with charge +Q on the top plate and -Q on th

Question

Consider a parallel plate capacitor with charge +Q on the top plate and -Q on the bottom plate. Will putting a dielectric material between the plate increase the electric field between the plates? Explain your answer. Consider two equal length L of wire, each of which is formed into a circular loop. One of the loops has a single turn of wire; the other has 2 turns (and therefore a correspondingly smaller radius). Identical currents I flow in each coil; let mu_1 denote the magnetic moment of the single turn coil in this case and mu_2 be the magnetic moment of the 2 turn coil. Circle the statement below that is true and briefly explain your reasoning mu_1 > mu_2 mu_1 = mu_2 mu_1

Explanation / Answer

c)

when we put a dielectric material betwen the plates

as the electric field is given as

E = sigma/epsilon

as epsilon will increase while putting in the dielectric

the electric field will decrease between the plates.

d)

as the magetic moment is given as

u = N * A * I

N is the number of turns

A is the area of cross section

I is the current

as there are 2 turns for 2

u1 < u2 (option iii) is the correct one

e)

for voltage * current = power

this quantity is called Power

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