Magnetic Effects of Electric Current

The needle deflects.

Electricity and magnetism.

Electromagnets.

<p>Hans Christian Oersted.</p> Signup and view all the answers

<p>1820</p> Signup and view all the answers

<p>Radio, television, and fiber optics.</p> Signup and view all the answers

<p>Oersted</p> Signup and view all the answers

<p>Perpendicular</p> Signup and view all the answers

<p>Copper</p> Signup and view all the answers

<p>Pass the current through the circuit.</p> Signup and view all the answers

<p>Oersted's discovery demonstrated that an electric current produces a magnetic field, linking electricity and magnetism as related phenomena. He observed that a compass needle was getting deflected when electric current passed through a metallic wire placed nearby.</p> Signup and view all the answers

<p>The compass needle deflects because the electric current in the wire generates a magnetic field around it. This magnetic field interacts with the magnetic needle of the compass, causing it to align with the direction of the field and deflect.</p> Signup and view all the answers

<p>The deflection is likely to increase because a thicker wire allows for a larger current to flow, producing a stronger magnetic field. A stronger magnetic field would exert a greater force on the compass needle causing a larger deflection.</p> Signup and view all the answers

<p>Reversing the current direction reverses the direction of the magnetic field around the wire. This would cause the compass needle to deflect in the opposite direction from its original deflection.</p> Signup and view all the answers

<p>Oersted's discovery laid the foundation for understanding electromagnetism, which is crucial for technologies like radios, televisions, and fiber optics. These technologies rely on the interaction between electric and magnetic fields.</p> Signup and view all the answers

<p>Increasing the current in the wire would strengthen the magnetic field around the wire. This stronger field would exert a greater force on the compass needle, causing a larger deflection.</p> Signup and view all the answers

<p>Placing the wire perpendicular to the plane of the paper ensures that the magnetic field lines encircle the wire in a plane parallel to the paper. This allows the compass needle, which is also in the plane of the paper, to easily interact with the magnetic field lines, maximizing the observed deflection.</p> Signup and view all the answers

<p>The text only introduces electromagnets, so based on the text, the primary difference is that electromagnets' magnetic properties are induced by electric current and can be turned on/off. The text does not introduce any information about permanent magnets.</p> Signup and view all the answers

<p>The deflection of the compass needle decreases, and the magnetic field strength weakens with distance, as the magnetic field's effect diminishes farther from the wire.</p> Signup and view all the answers

<p>To investigate the relationship, you could systematically vary the current flowing through the wire (using a variable power supply or different resistors) and measure the corresponding deflection of the compass needle at a fixed distance from the wire. Record the current and the deflection, and analyze the collected data to check for correlations.</p> Signup and view all the answers

Flow of electric charge through a conductor.

The influence of electric current that can deflect a magnetic compass needle.

The relationship between electricity and magnetism.

Scientist who discovered the relationship between electricity and magnetism.

Change in direction of compass needle due to electric current.

An experiment demonstrating the magnetic effect of current.

The intensity of a magnetic field, measured in oersteds.

A closed path through which electric current flows.

A magnet created by electric current passing through a wire coil.

Electric current and magnets are interconnected phenomena.

The movement of a compass needle in response to a magnetic field created by an electric current.

A wire that conducts electricity and generates a magnetic field around it.

An experiment by Hans Christian Oersted that showed how electric currents can deflect a compass needle.

The phenomenon where an electric current produces magnetic fields around it.

The interrelationship between electricity and magnetism as discovered by Oersted.

An invisible field around a magnet or current-carrying wire that exerts a magnetic force.

An experiment involving a copper wire and compass to demonstrate magnetic effects of current.

Oersted's discovery paved the way for modern technologies like radio and television.

The oersted, named in honor of Hans Christian Oersted for his contributions to electromagnetism.

A small magnetized indicator that shows direction based on Earth's magnetic field.