Tuesday, Oct. 16, 2012 - UTA HEP WWW Home Page
... • Experimentally the direction of the force is given by another right-hand rule When the fingers of the right-hand point in the direction of the current and the finger tips bend in the direction of magnetic field B, the direction of thumb points to the direction of the force ...
... • Experimentally the direction of the force is given by another right-hand rule When the fingers of the right-hand point in the direction of the current and the finger tips bend in the direction of magnetic field B, the direction of thumb points to the direction of the force ...
Lec 04
... an inductor! All the loops' contribution to the magnetic field add together to make a stronger field. Unlike capacitors and resistors, practical inductors are easy to make by hand. One can for instance spool some wire around a short wooden dowel, put the spool inside a plastic aspirin bottle with th ...
... an inductor! All the loops' contribution to the magnetic field add together to make a stronger field. Unlike capacitors and resistors, practical inductors are easy to make by hand. One can for instance spool some wire around a short wooden dowel, put the spool inside a plastic aspirin bottle with th ...
Chapter 31
... area 0.070 m2 rotates clockwise in the x-y plane. When the plane of the loop is parallel to the field, what is the direction of the current as viewed from the top (clockwise or counter-clockwise)? What is the maximum induced emf? Starting time t = 0 when the emf is zero, at what later time will its ...
... area 0.070 m2 rotates clockwise in the x-y plane. When the plane of the loop is parallel to the field, what is the direction of the current as viewed from the top (clockwise or counter-clockwise)? What is the maximum induced emf? Starting time t = 0 when the emf is zero, at what later time will its ...
Feedback_what did I learn
... -LW response: wL=1/RC1 + 1/RC2 + ... Each time constant is calculated by short-circuiting the voltage source and the other capacitances (coupling and bypass), and opening the current sources. -HW response: wH=1/(RC1+1/RC2+...) Each time constant is calculated by making the other stray capacitances a ...
... -LW response: wL=1/RC1 + 1/RC2 + ... Each time constant is calculated by short-circuiting the voltage source and the other capacitances (coupling and bypass), and opening the current sources. -HW response: wH=1/(RC1+1/RC2+...) Each time constant is calculated by making the other stray capacitances a ...
Completing the circuit
... Segmented armatures are used to create multiple independent circuits and magnets which are active only when near the orientation for maximum torque. Pairs of brushes contact opposite sides of the commutator to excite different coils ...
... Segmented armatures are used to create multiple independent circuits and magnets which are active only when near the orientation for maximum torque. Pairs of brushes contact opposite sides of the commutator to excite different coils ...
Test3 - UF Physics
... parallel between point A and point B (see picture just above), what is the resultant total resistance of these three resistors? 3 sig figs 1/Rtotal = 1/R1 + 1/R2 + 1/R3 = 0.066666 + 0.1 + 0.2 = 0.30666 so Rtotal=2.73 Ω 7b. (2 points) If a current of 1 A runs between point A and point B in the parall ...
... parallel between point A and point B (see picture just above), what is the resultant total resistance of these three resistors? 3 sig figs 1/Rtotal = 1/R1 + 1/R2 + 1/R3 = 0.066666 + 0.1 + 0.2 = 0.30666 so Rtotal=2.73 Ω 7b. (2 points) If a current of 1 A runs between point A and point B in the parall ...
t299-3-03f
... Two straight conducting rails form a right angle where their ends are joined and lie along the +x, +y axes. An identical pair of rails moves with speed v0 m/s along a line at degrees to the +y axis, as shown, so that a rectangular circuit is formed which increases in size. At t = 0 the area enclos ...
... Two straight conducting rails form a right angle where their ends are joined and lie along the +x, +y axes. An identical pair of rails moves with speed v0 m/s along a line at degrees to the +y axis, as shown, so that a rectangular circuit is formed which increases in size. At t = 0 the area enclos ...
Current and Resistance
... resist the flow of current. It is found that for any conducting object, the current is proportional to the applied voltage. STATEMENT: DV=IR R is called the resistance of the object. An object that allows a current flow of one ampere when one volt is applied to it has a resistance of one OHM. ...
... resist the flow of current. It is found that for any conducting object, the current is proportional to the applied voltage. STATEMENT: DV=IR R is called the resistance of the object. An object that allows a current flow of one ampere when one volt is applied to it has a resistance of one OHM. ...
DISCOVERING ELECTROMAGNETIC INDUCTION
... Using multimedia can be even more boring: students find difficult the visualisation of the coil windings directions and the current, at the same time, on a 2-D representation [1], see fig.2. The crucial question, on the direction of the current induced, is not the "right" or "left" hand rule (as, by ...
... Using multimedia can be even more boring: students find difficult the visualisation of the coil windings directions and the current, at the same time, on a 2-D representation [1], see fig.2. The crucial question, on the direction of the current induced, is not the "right" or "left" hand rule (as, by ...
current & charge
... • In a conductor, electrons are allowed to move freely. • An electric current is a flow of electric charges, usually electrons. • Electrons are very small negatively charged particles. • In a closed circuit electric current moves from the negative terminal to the positive terminal of a battery or po ...
... • In a conductor, electrons are allowed to move freely. • An electric current is a flow of electric charges, usually electrons. • Electrons are very small negatively charged particles. • In a closed circuit electric current moves from the negative terminal to the positive terminal of a battery or po ...
PHYS 1112 Final Exam Mon. May 4, 2009, 7:00pm-10:00pm
... made of dawgium alloy (a very poorly conducting metal!) with a resistivity of 3 × 10−6 Ω · m. Find the current flowing in this wire when it is connected to a 16V battery. [Hint: The area of a circle is A = (π/4)D2 .] (A) (B) (C) (D) (E) ...
... made of dawgium alloy (a very poorly conducting metal!) with a resistivity of 3 × 10−6 Ω · m. Find the current flowing in this wire when it is connected to a 16V battery. [Hint: The area of a circle is A = (π/4)D2 .] (A) (B) (C) (D) (E) ...
B - FIU
... A flexible loop of wire lies in a uniform magnetic field of magnitude B directed into the plane of the picture. The loop is pulled as shown, reducing its area. The induced current A. flows downward through resistor R and is proportional to B. B. flows upward through resistor R and is proportional to ...
... A flexible loop of wire lies in a uniform magnetic field of magnitude B directed into the plane of the picture. The loop is pulled as shown, reducing its area. The induced current A. flows downward through resistor R and is proportional to B. B. flows upward through resistor R and is proportional to ...
Electricity and Magnetism
... repel other magnets. They can also attract pieces of iron that are not magnetic (magNEH-tick). These pieces of iron will become magnetized (MAG-nuh-tized), or made into magnets. Every magnet has two ends called poles. These poles are called north and south. Poles behave like electrical charges in ma ...
... repel other magnets. They can also attract pieces of iron that are not magnetic (magNEH-tick). These pieces of iron will become magnetized (MAG-nuh-tized), or made into magnets. Every magnet has two ends called poles. These poles are called north and south. Poles behave like electrical charges in ma ...
Lab E7: The Wheatstone Bridge
... the bridge to less than 1A. (Higher currents might over-heat components of the bridge.) The rechargeable battery lasts only 6 hours when connected to the bridge, so please remember to disconnect it when done. The known resistor Rk is adjustable and can be set to any value from 1 to 999 in 1 steps ...
... the bridge to less than 1A. (Higher currents might over-heat components of the bridge.) The rechargeable battery lasts only 6 hours when connected to the bridge, so please remember to disconnect it when done. The known resistor Rk is adjustable and can be set to any value from 1 to 999 in 1 steps ...
Galvanometer
A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current. It is an analog electromechanical actuator that produces a rotary deflection of some type of pointer in response to electric current through its coil in a magnetic field.Galvanometers were the first instruments used to detect and measure electric currents. Sensitive galvanometers were used to detect signals from long submarine cables, and to discover the electrical activity of the heart and brain. Some galvanometers use a solid pointer on a scale to show measurements; other very sensitive types use a miniature mirror and a beam of light to provide mechanical amplification of low-level signals. Initially a laboratory instrument relying on the Earth's own magnetic field to provide restoring force for the pointer, galvanometers were developed into compact, rugged, sensitive portable instruments essential to the development of electrotechnology. A type of galvanometer that records measurements permanently is the chart recorder. The term has expanded to include use of the same mechanism in recording, positioning, and servomechanism equipment.