Electromagnet with Compass(STEAM Education)
To understand the concept of electromagnetism and explore the direction of magnetic fields and poles.
Project : 30
Electromagnet with Compass
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Project Aim:
To understand the concept of electromagnetism and explore the
direction of magnetic fields and poles.
Components Used:
1. Power Supply
2. Electromagnetic Coil (Iron Core)
3. Transistor NPN
4. Push Button
5. Resistor 1K
6. Connecting Wires
Circuit Diagram:
Connection Procedure:
Step
1: Plug one terminal of the
electromagnetic coil (Iron Core) to Pin66 and plug the other terminal of the
electromagnetic coil to Pin68.
Step 2:
Connect the positive terminal of the Power Supply (Pin 62) to one end of the
Push Button (Pin 57).
Step 3:
Connect the other end of the Push Button (Pin 58) to one end of the 1K Resistor
(Pin 5).
Step 4:
Connect the other end of the 1K Resistor (Pin 6) to the Base of the NPN
Transistor (Pin 30).
Step 5:
Connect the Emitter of the NPN Transistor (Pin 29) to the negative terminal of
the Power Supply (Pin 59).
Step 6:
Connect the Collector of the NPN Transistor (Pin 31) to one terminal of the
Electromagnetic Coil (Pin 67).
Step 7:
Connect the other terminal of the Electromagnetic Coil (Pin 65) to the positive
terminal of the Power Supply (Pin 62).
To verify the successful operation of the project, take the compass near to the
electromagnetic coil and press then Push Button. Then, observe the behavior of
the magnetic compass placed near the coil. The needle of the compass should
respond to the presence of the magnetic field generated by the coil. You should
observe the needle deflecting and aligning itself with the direction of the
magnetic field, indicating that the circuit is functioning as intended and
producing the expected electromagnetic effect.
Explanation:
In
this project, we've set up a circuit comprising a switch, a transistor, a coil,
and other necessary components connected in series. When the switch is closed,
power is supplied to the base of the transistor. The transistor, functioning as
a switch, allows the power to flow to the coil. According to the law of
electromagnetism, whenever there's a change in the electric field, a magnetic
field is generated. This means that moving electric currents produce magnetic
fields. To observe the output of the magnetic field's direction and poles, we
place a magnetic compass near the coil.
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