Determine which plate must be positive

Reference no: EM13681516

A tiny 0.0250 microgram oil drop containing 15 excess electrons is suspended between to horizontally closely-spaced metal plates that carry same but opposite charges on their facing surfaces. The plates are both circular with a radius of 6.50 centimeter. (k = 1/4pi(epsilon)0 = 9.0 x 10⁹ N·m²/C², e = 1.6 x 10^-19 C).

(a) Find how much excess charge must be on each plate to hold the oil drop steady?

(b) Determine which plate must be positive, the upper one or the lower one?

Reference no: EM13681516

Questions Cloud

Find the magnitude and direction of force on electron : An electron is located in a uniform electric field of 4.5 x 104 N/C that points to the right. Find the magnitude and direction of force on electron

Find the acceleration due to gravity at that altitude : The space shuttle typically orbits 400 kilometers above the earth's surface. The earth has a mass of 5.98 × 1024 kilogram and a radius of 6,380 kilometer. Find the acceleration due to gravity at that altitude

Obtain the velocity of the combined cart after collision : A 3 kilogram cart moves on an air track at 1.2 meter per second. It collides with and sticks to another cart of mass 5 kilogram, Obtain the velocity of the combined cart after collision

Find what force did the wall apply to the bullet : A 15 gram rubber bullet hits a wall with a speed of 150 meter per second. Find what force did the wall apply to the bullet

Determine which plate must be positive : A tiny 0.0250 microgram oil drop containing 15 excess electrons is suspended between to horizontally closely-spaced metal plates that carry same but opposite charges on their facing surfaces. Determine which plate must be positive, the upper one or..

Determine the charge per unit area on each plate : Two large closely spaced parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 x 106 N/C. Determine the charge per unit area on each plate

Find the instantaneous emf in the coil : A 500-turn circular coil with an area of .050 m2 is mounted on a rotating frame that turns at a rate of 20.0 rad/s in the presence of a .050-T uniform magnetic field perpendicular to the axis of rotation

Find how many excess electrons are on the outer surface : A thin spherical copper shell of radius 9.5 centimeter carries an excess charge of -4.2 nC. Find how many excess electrons are on the outer surface of the shell

Find what the outward flux through your body back surface : You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). Find the outward flux through your body back surface

User Account

All Pages