{"id":3595,"date":"2022-11-16T10:00:18","date_gmt":"2022-11-16T04:30:18","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=3595"},"modified":"2022-11-17T10:59:30","modified_gmt":"2022-11-17T05:29:30","slug":"magnetic-effect-of-electric-current","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/magnetic-effect-of-electric-current\/","title":{"rendered":"What Is Magnetic Effect Of Electric Current"},"content":{"rendered":"
You know that magnets can attract certain substances such as iron. So far, you have studied about electricity and magnetism separately. However, did you know that electricity and magnetism are closely related? Perform the following activity to understand this.<\/p>\n
Aim:<\/strong> To see the magnetic effect of current passing through a wire (adult supervision required). Observation:<\/strong> When the wire touches the positive terminal of the cell, the needle of the magnetic compass gets deflected (moves). We have seen in the above activity that a current-carrying conductor behaves like a magnet. As a result, it can deflect a magnetic needle. Fig.<\/strong> Applications of magnetic effect of current<\/p>\n People also ask<\/strong><\/p>\n Aim:<\/strong> To make an electromagnet (adult supervision required) and show that it attracts iron. <\/p>\n Observation:<\/strong> The safety pin gets attracted to the iron nail. The strength of the electromagnet depends on the number of turns of the wire around the core and the amount of current passing through it. The more the number of turns, the more will be the magnetic effect. The iron nail attracts more number of safety pins when wrapped with a coil with more number of turns. What will happen if the current passing through the coil is switched off? The iron piece will lose its magnetic effect<\/strong><\/a>, i.e., it will stop behaving like a magnet and, thus, will not attract the safety pin.<\/p>\n
\nMaterials needed:<\/strong> 1.5 V cell, two pieces of insulated wire, a small magnetic compass, and insulation\/adhesive tape.
\nMethod:<\/strong><\/p>\n\n
\nConclusion:<\/strong> This is because when a current passes through the wire, it behaves like a magnet and therefore deflects the magnetic needle of the compass.
\nNote:<\/strong> Follow the precautions given on p. 182 while doing this activity.<\/p>\n
\nWrap a wire around a soft iron piece (known as the core). When an electric current is passed through the wire, the iron piece behaves like a magnet. A magnet made using such an arrangement is called an electromagnet<\/strong>. A solenoid<\/strong> is a device which can be used as an electromagnet. It is made of a long wire that has been wound many times (usually around a hollow metallic core) into a tightly packed coil, it has the shape of a long cylinder.
\n<\/p>\n\n
Activity<\/strong><\/h3>\n
\nMaterials needed:<\/strong> 1.5 V cell, an iron nail, a safety pin, and a piece of wire (the one with a single thick wire).
\nMethod:<\/strong><\/p>\n\n
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\nConclusion:<\/strong> Passing an electric current in a coil wrapped around an iron piece makes the iron piece magnetic.<\/p>\n