Mutual / Self-Induction * Learning Outcomes
... a coil of wire (circuit 1), while the other consists of a d.c. power supply, open switch, and coil of wire (circuit 2). 2. Move the coils next to each other. 3. Close the switch in circuit 2 and note an instantaneous deflection in the galvanometer needle in circuit 1. 4. Leave the switch closed, not ...
... a coil of wire (circuit 1), while the other consists of a d.c. power supply, open switch, and coil of wire (circuit 2). 2. Move the coils next to each other. 3. Close the switch in circuit 2 and note an instantaneous deflection in the galvanometer needle in circuit 1. 4. Leave the switch closed, not ...
Lecture 17 - Purdue Physics
... A. I1 is decreasing in magnitude B. I1 is constant C. I1 is increasing in magnitude ...
... A. I1 is decreasing in magnitude B. I1 is constant C. I1 is increasing in magnitude ...
Chapter 30: Inductance
... His/her father pushes the child and gets the child swinging. In a perfect system, the child will continue swinging ...
... His/her father pushes the child and gets the child swinging. In a perfect system, the child will continue swinging ...
• - No Brain Too Small
... magnet within a coil. During rotation the magnetic flux through the coil alters because the plane of the coil is alternately parallel to the magnetic field lines and then perpendicular to them. Dynamos use magnets, a coil and movement to produce electricity in exactly the opposite way to the motor. ...
... magnet within a coil. During rotation the magnetic flux through the coil alters because the plane of the coil is alternately parallel to the magnetic field lines and then perpendicular to them. Dynamos use magnets, a coil and movement to produce electricity in exactly the opposite way to the motor. ...
Name ______ period __
... 1. Permanent magnets – are magnetic all the time (___________________) Other substances can be made into _______________ magnets by placing a strong permanent magnet __________ them or by stroking them with a permanent magnet. 2. Materials are classified as either magnetically __________ or ________ ...
... 1. Permanent magnets – are magnetic all the time (___________________) Other substances can be made into _______________ magnets by placing a strong permanent magnet __________ them or by stroking them with a permanent magnet. 2. Materials are classified as either magnetically __________ or ________ ...
1 - India Study Channel
... 9. Suppose that the electric field amplitude of an electromagnetic wave is E0=120N/C and that it frequencies is 50 MHz (a) Determine B0,ω and k (b)Find the expression for ‘E’. 10. Two polaroids are placed at right angles to each other. What will happen to the intensity of transmitted light when one ...
... 9. Suppose that the electric field amplitude of an electromagnetic wave is E0=120N/C and that it frequencies is 50 MHz (a) Determine B0,ω and k (b)Find the expression for ‘E’. 10. Two polaroids are placed at right angles to each other. What will happen to the intensity of transmitted light when one ...
Chapter 1 Test – Electricity
... Part II. Multiple Choice: read each question and choose the best answer. Circle the correct answer. 1) Know what is magnetic? 2) What will make an electromagnet stronger?? 3) A bar magnet is hanging from a string. What happens if you hold a compass near the magnet? 4) Maglev trains use the power of ...
... Part II. Multiple Choice: read each question and choose the best answer. Circle the correct answer. 1) Know what is magnetic? 2) What will make an electromagnet stronger?? 3) A bar magnet is hanging from a string. What happens if you hold a compass near the magnet? 4) Maglev trains use the power of ...
EM Induction 1. When a strip of magnetic material, variably
... A loop of wired attached to electronic circuitry is embedded in a road surface. The earth’s magnetic field exists through this loop. A car, whose frame is made of ferromagnetic material, moves over top this embedded loop toward an intersection. Explain how this setup causes the traffic light to swit ...
... A loop of wired attached to electronic circuitry is embedded in a road surface. The earth’s magnetic field exists through this loop. A car, whose frame is made of ferromagnetic material, moves over top this embedded loop toward an intersection. Explain how this setup causes the traffic light to swit ...
The Rules of Electromagnetism
... current every half-revolution to ensure that the torque exerted on the armature continues to act in the forward direction. The sparking from the reversal of the current as well as the sliding contact causes wear of the brushes and commutator, which is a significant drawback of d.c. motors. The field ...
... current every half-revolution to ensure that the torque exerted on the armature continues to act in the forward direction. The sparking from the reversal of the current as well as the sliding contact causes wear of the brushes and commutator, which is a significant drawback of d.c. motors. The field ...
SA1 REVISION WORKSHEET 3
... 1. What is the frequency of an alternating current if its direction changes after 0.01S? 2. How can it be shown that a magnetic field at a point near a wire related to the strength of the electric current flowing in a wire? 3. Name the physical quantity whose SI unit is Wb-m2. I sit a scalar quantit ...
... 1. What is the frequency of an alternating current if its direction changes after 0.01S? 2. How can it be shown that a magnetic field at a point near a wire related to the strength of the electric current flowing in a wire? 3. Name the physical quantity whose SI unit is Wb-m2. I sit a scalar quantit ...
Magnetism
... force results from charged particles. Magnetic force results from moving charges. Force of magnetic field on the charge ...
... force results from charged particles. Magnetic force results from moving charges. Force of magnetic field on the charge ...
Solutions to Period 16 Exercises
... d) An electromagnet is used to spin an electromagnet. e) An electric motor can be made from all of the above designs. Since you need at least one changing magnetic field, two permanent magnets do not work. E.2 = c 16-Ex 1&2 ...
... d) An electromagnet is used to spin an electromagnet. e) An electric motor can be made from all of the above designs. Since you need at least one changing magnetic field, two permanent magnets do not work. E.2 = c 16-Ex 1&2 ...
Electricity and Magnetism
... moves back and forth. • Can be produced by a generator using the principle of electromagnetic induction. • The current is produced when a magnet moves relative to a coil of wire. ...
... moves back and forth. • Can be produced by a generator using the principle of electromagnetic induction. • The current is produced when a magnet moves relative to a coil of wire. ...
Magnets - Science with Ms. C
... A generator contains coils of wire that are stationary, and rotating magnets are rotated by turbines. Turbines are huge wheels that rotate when pushed by water, wind, or steam. Thus mechanical energy is changed to electrical energy by a generator. Smaller generators may be powered by gasoline. ...
... A generator contains coils of wire that are stationary, and rotating magnets are rotated by turbines. Turbines are huge wheels that rotate when pushed by water, wind, or steam. Thus mechanical energy is changed to electrical energy by a generator. Smaller generators may be powered by gasoline. ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.