Physics 132 Prof. Buehrle 2/11/14
... Electric Forces and Fields When we focus our attention on the electric force on a particular object with charge q0 (a “test charge”) we see the force it feels depends on q0. Define quantity that does not depend on charge of test object “test” charge -> Electric Field E ...
... Electric Forces and Fields When we focus our attention on the electric force on a particular object with charge q0 (a “test charge”) we see the force it feels depends on q0. Define quantity that does not depend on charge of test object “test” charge -> Electric Field E ...
Lecture 8: Electric potential
... (2) The electric potential at C is higher than at A. (3) The electric potential energy at B is the same as at C. (4) When the charge is moved from A to D, the electric potential energy decreases. (5) If the charge is released at D, it will move to the left. ...
... (2) The electric potential at C is higher than at A. (3) The electric potential energy at B is the same as at C. (4) When the charge is moved from A to D, the electric potential energy decreases. (5) If the charge is released at D, it will move to the left. ...
PHYS4210 Electromagnetic Theory Quiz 1 Feb 2010
... This is a closed book quiz! Write the best choice in the space next to the question. 1. Three point charges lie along a line. The two outermost have charge q. The third is midway between then other two, and has charge −2q. This arrangement has A. zero total charge, zero dipole moment, and zero quadr ...
... This is a closed book quiz! Write the best choice in the space next to the question. 1. Three point charges lie along a line. The two outermost have charge q. The third is midway between then other two, and has charge −2q. This arrangement has A. zero total charge, zero dipole moment, and zero quadr ...
A Brief History of Planetary Science
... Is it possible to have a zero electric field on a line connecting two positive charges? A) Yes, at one point on the line B) Yes, along the entire line C) No, the electric field must always be greater than zero D) No, but it would be possible for two negative charges E) No, the electric field is onl ...
... Is it possible to have a zero electric field on a line connecting two positive charges? A) Yes, at one point on the line B) Yes, along the entire line C) No, the electric field must always be greater than zero D) No, but it would be possible for two negative charges E) No, the electric field is onl ...
Equipotential Lines 17.1 Electric Potential Energy PE = energy
... moves in electric field is minus change in PE: Change in potential energy when a charge q moves through potential difference of V is, ...
... moves in electric field is minus change in PE: Change in potential energy when a charge q moves through potential difference of V is, ...
Sample problems Chap 19 Cutnell
... Does the electric potential energy in crease, decrease, or remain the same when (a) both protons are replaced by electrons, and (b) only one of the protons is replaced by an electron? Justify your answers. ...
... Does the electric potential energy in crease, decrease, or remain the same when (a) both protons are replaced by electrons, and (b) only one of the protons is replaced by an electron? Justify your answers. ...
Lecture 4
... Induced dipole moment Many molecules such as H 2 O have a permanent electric dipole moment. These are known as "polar" molecules. Others, such as O 2 , N 2 , etc the electric dipole moment is zero. These are known as "nonpolar" molecules One such molecule is shown in fig.a. The electric dipole momen ...
... Induced dipole moment Many molecules such as H 2 O have a permanent electric dipole moment. These are known as "polar" molecules. Others, such as O 2 , N 2 , etc the electric dipole moment is zero. These are known as "nonpolar" molecules One such molecule is shown in fig.a. The electric dipole momen ...
Electric charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative. Positively charged substances are repelled from other positively charged substances, but attracted to negatively charged substances; negatively charged substances are repelled from negative and attracted to positive. An object is negatively charged if it has an excess of electrons, and is otherwise positively charged or uncharged. The SI derived unit of electric charge is the coulomb (C), although in electrical engineering it is also common to use the ampere-hour (Ah), and in chemistry it is common to use the elementary charge (e) as a unit. The symbol Q is often used to denote charge. The early knowledge of how charged substances interact is now called classical electrodynamics, and is still very accurate if quantum effects do not need to be considered.The electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. Electrically charged matter is influenced by, and produces, electromagnetic fields. The interaction between a moving charge and an electromagnetic field is the source of the electromagnetic force, which is one of the four fundamental forces (See also: magnetic field).Twentieth-century experiments demonstrated that electric charge is quantized; that is, it comes in integer multiples of individual small units called the elementary charge, e, approximately equal to 6981160200000000000♠1.602×10−19 coulombs (except for particles called quarks, which have charges that are integer multiples of e/3). The proton has a charge of +e, and the electron has a charge of −e. The study of charged particles, and how their interactions are mediated by photons, is called quantum electrodynamics.