Bagaimana Cara Menggunakan Galvanometer?
Summary
TLDRThis video script explains the use of a galvanometer, a device for measuring small electric currents in microamperes. It describes the galvanometer's neutral position at zero, with positive and negative scales indicating the direction of electric current. The script demonstrates how connecting a battery, wires, and a resistor to the galvanometer can show the current's direction by the needle's deflection. A rightward deflection indicates current entering the positive terminal, while a leftward deflection signifies the opposite. This concept will be used to explain Lenz's Law in future tutorials.
Takeaways
- 🔬 A galvanometer is typically used to measure very small electric currents, in the microampere range.
- 🎯 When there is no electric current, the galvanometer's needle points exactly at the center, at the 0 mark.
- ➡ The scale to the right of the 0 mark indicates positive electric current values, while the left indicates negative.
- 🔌 The galvanometer has two terminals on the front: a red one for positive and a black one for negative.
- 🔋 To demonstrate the galvanometer's operation, connect the positive terminal of a battery to the red terminal with a red wire, and the negative terminal to the black terminal with a black wire.
- ⚡ When the battery is connected correctly, the electric current flows from the positive terminal to the red terminal, and out from the black terminal to the negative terminal.
- 📈 The galvanometer's needle deflects to the right, indicating the direction of the current is from the positive to the negative terminal.
- 🔁 If the battery is reversed, the current will flow from the positive terminal to the black terminal, and out from the red terminal to the negative terminal, causing the needle to deflect to the left.
- 📉 The deflection of the galvanometer's needle corresponds to the direction of the current entering the terminals.
- 🔄 The concept of the needle's deflection will be used to explain Lenz's Law in a future tutorial.
- 👍 Don't forget to like, share, and subscribe for more informative content.
Q & A
What is a galvanometer typically used for?
-A galvanometer is typically used for measuring very small electric currents, on a micro-ampere scale.
What is the position of the galvanometer's needle when there is no electric current?
-When there is no electric current, the needle of the galvanometer will be exactly in the middle, pointing to the zero value.
What do the numbers next to the zero mark on the galvanometer indicate?
-The numbers next to the zero mark indicate the value of the electric current, with the right side being positive and the left side being negative.
What is the purpose of having both positive and negative values on the galvanometer?
-Having both positive and negative values helps to determine the direction of the electric current.
What do the red and black plugs in front of the galvanometer represent?
-The red plug represents the positive terminal, while the black plug represents the negative terminal.
How do you connect the battery, wire, and resistor to understand how the galvanometer works?
-Connect the positive terminal of the battery to the positive plug with a red wire, and connect the negative terminal of the battery to the negative plug with a black wire.
What happens to the galvanometer's needle when the electric current flows from the positive battery terminal to the positive plug?
-When the electric current flows from the positive battery terminal to the positive plug, the galvanometer's needle will deflect to the right.
If the battery is reversed, how does the direction of the electric current change?
-If the battery is reversed, the electric current will flow from the positive battery terminal to the negative plug, and then from the positive plug to the negative battery terminal.
What is the effect of reversing the battery on the galvanometer's needle deflection?
-When the battery is reversed, the galvanometer's needle will deflect to the left.
What conclusion can be drawn from the deflection of the galvanometer's needle?
-The direction of the galvanometer's needle deflection corresponds to the plug into which the electric current enters. Current entering the positive plug will cause the needle to deflect to the right.
How will the concept of the galvanometer's needle deflection be used in future tutorials?
-The concept of the galvanometer's needle deflection will be used to explain Lenz's Law in the next tutorial.
Outlines
🔋 Understanding the Galvanometer
This paragraph introduces a galvanometer, a device commonly used to measure very small electric currents in the microampere range. It explains that when there is no electric current, the galvanometer's needle points directly at the center, at the zero mark, with positive values on the right and negative on the left, indicating the direction of the electric current. The galvanometer has two terminals, a red positive and a black negative, which are used to connect with a battery and resistor to demonstrate the galvanometer's operation. The needle's deflection to the right indicates current flowing into the positive terminal, while reversing the battery causes the needle to deflect to the left, indicating current flowing into the negative terminal. This behavior is used to explain the concept of Lenz's Law in future tutorials.
Mindmap
Keywords
💡Galvanometer
💡Microampere
💡Electric current
💡Deflection
💡Positive and negative
💡Battery
💡Wire
💡Resistor
💡Circuit
💡Lenz's Law
Highlights
Galvanometer is commonly used to measure very small electric currents, in the micro-ampere range.
When there is no electric current, the galvanometer needle is centered at zero.
The galvanometer has markings indicating electric current values, with positive on the right and negative on the left.
The two types of values help to determine the direction of the electric current.
There are two connectors at the front, with red being positive and black being negative.
To understand how a galvanometer works, prepare a battery, wires, and a resistor.
Connect the positive terminal of the battery to the positive connector with a red wire.
Connect the negative terminal of the battery to the negative connector with a black wire.
Electric current flows from the positive terminal of the battery to the positive connector, then out from the negative connector to the negative terminal of the battery.
The galvanometer needle deflects to the right.
If the battery is reversed, the current flows from the positive terminal to the negative connector, then out from the positive connector to the negative terminal.
The galvanometer needle deflects to the left when the battery is reversed.
The deflection direction of the galvanometer needle corresponds to the connector through which the current enters.
Current entering the positive connector causes the galvanometer needle to deflect to the right.
This concept will be used to explain Lenz's Law in the next tutorial.
Don't forget to like, share, and subscribe for more educational content.
Transcripts
Berikut adalah ilustrasi dari galvanometer
Galvanometer ini biasa digunakan
untuk mengukur arus listrik yang sangat kecil
Dalam skala mikro ampere
Pada kondisi tanpa arus listrik,
jarum galvanometer akan berada tepat di tengah
Di sebelah nilai 0, di sana terdapat angka,
yang menyatakan nilai arus listrik
Sebelah kanan adalah positif,
sedangkan sebelah kiri adalah negatif
Kegunaan 2 jenis nilai ini adalah
untuk mengetahui arah dari arus listrik
Di bagian depan terdapat 2 steker,
warna merah merupakan steker positif,
dan warna hitam merupakan steker negatif
Baiklah sekarang kita akan mempersiapkan
baterai, kabel, dan resistor untuk mengetahui
bagaimana galvanometer bekerja?
Hubungkan kutup positif baterai
dan steker positif dengan kabel merah,
dan hubungkan kutup negatif baterai
dan steker positif dengan kabel hitam
Arus listrik akan mengalir
dari kutub positif baterai menuju steker positif,
kemudian arus listrik keluar dari stekel negatif
menuju kutup negatif baterai
Jarum galvanometer ternyata menyimpang ke arah kanan
Jika posisi baterai dibalik,
Arus listrik akan mengalir
dari kutub positif baterai menuju steker negatif,
kemudian arus listrik keluar dari steker positif
menuju kutup negatif baterai
Sekarang, Jarum galvanometer menyimpang ke arah kiri
Berdasarkan data ini, Kita bisa mengambil kesimpulan
Arah penyimpangan dari jarum galvanometer adalah
sesuai dengan steker yang dimasuki arus listrik
Arus listrik yang masuk ke dalam stekel positif
akan menyebabkan jarum dari galvanometer
menyimpang ke kanan,
Kita akan menggunakan konsep ini,
untuk menjelaskan Hukum Lenz
pada tutorial selanjutnya
Sampai saat itu, jangan lupa untuk
like, share, dan subscribe
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