magnetic field
... If another pole comes into this space, it feels a force This still doesn't explain the origin of the magnetic field... ...
... If another pole comes into this space, it feels a force This still doesn't explain the origin of the magnetic field... ...
Science 9 Unit 4: Electricity Name:
... Some motors run on direct current (DC). It is 'direct', because the electricity flows in only one direction. Alternating current (AC) flows back and forth 60 times per second. ...
... Some motors run on direct current (DC). It is 'direct', because the electricity flows in only one direction. Alternating current (AC) flows back and forth 60 times per second. ...
Name ANSWER KEY Date______________ Unit 11 Magnets
... A coil of wire with an electric current in it 6. Which process occurs when a paper clip is held near a magnet? Explain what happens to the paper clip. The paper clip is drawn towards the magnet by the magnetic field. The domains become aligned and the paper clip becomes a temporary magnet. 7. What a ...
... A coil of wire with an electric current in it 6. Which process occurs when a paper clip is held near a magnet? Explain what happens to the paper clip. The paper clip is drawn towards the magnet by the magnetic field. The domains become aligned and the paper clip becomes a temporary magnet. 7. What a ...
Ph12-Lab5F
... How does the number of loops affect the current flow: the greater the number of loops, the greater the current. (1 mark) ...
... How does the number of loops affect the current flow: the greater the number of loops, the greater the current. (1 mark) ...
Electromagnetic Induction and Alternating current
... A circular copper disc. 10 cm in radius rotates at a speed of 2 π rad/s about an axis through its centre and perpendicular to the disc. A uniform magnetic field of 0.2T acts perpendicular to the disc. 1) Calculate the potential difference developed between the axis of the disc and the rim. 2) What i ...
... A circular copper disc. 10 cm in radius rotates at a speed of 2 π rad/s about an axis through its centre and perpendicular to the disc. A uniform magnetic field of 0.2T acts perpendicular to the disc. 1) Calculate the potential difference developed between the axis of the disc and the rim. 2) What i ...
spark test
... A good ground between the coil and the engine block. When using an Ohm meter, there should be no more resistance between the coil and engine block than when you touch the meter test leads together. Ignition coil resistance values per the service manual, or try replacing the coil with a known goo ...
... A good ground between the coil and the engine block. When using an Ohm meter, there should be no more resistance between the coil and engine block than when you touch the meter test leads together. Ignition coil resistance values per the service manual, or try replacing the coil with a known goo ...
9.2 Oersted`s experiment
... Aim: To reproduce Oersted’s experiment which demonstrated that currents produce magnetic fields. To study what factors affect this magnetic field and to find out how an electromagnet works. ...
... Aim: To reproduce Oersted’s experiment which demonstrated that currents produce magnetic fields. To study what factors affect this magnetic field and to find out how an electromagnet works. ...
How do they work?
... Why should AC be used rather than DC? As useful as transformers are, they only work with AC. Since the phenomenon of mutual induction relies on changing magnetic fields, and direct current (DC) can only produce steady magnetic fields, transformers simply will not work with direct current. Of course ...
... Why should AC be used rather than DC? As useful as transformers are, they only work with AC. Since the phenomenon of mutual induction relies on changing magnetic fields, and direct current (DC) can only produce steady magnetic fields, transformers simply will not work with direct current. Of course ...
File - Physical Science
... • Magnetic Field Lines always move out of the north pole and into the south pole!!! • Magnets are strongest at the poles!! • If you break a bar magnet in half, you get 2 bar magnets both with a north and a south pole!! ...
... • Magnetic Field Lines always move out of the north pole and into the south pole!!! • Magnets are strongest at the poles!! • If you break a bar magnet in half, you get 2 bar magnets both with a north and a south pole!! ...
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.