A straight wire is lying flat on a horizontal table. The wire is connected to a battery as shown. The direction of the magnetic right above the wire, as viewed from above, is: to the right.

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Chapter1: Units, Trigonometry. And Vectors
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**Magnetic Field Around a Current-Carrying Wire**

**Description:**
A straight wire is lying flat on a horizontal table. The wire is connected to a battery, as shown in the diagram below.

**Diagram:**
The diagram depicts a horizontal wire connected to a battery. The battery symbol is on the left, with a positive terminal at the top and a negative terminal at the bottom. The wire is connected vertically on the right side of the battery.

**Question:**
The direction of the magnetic field right above the wire, as viewed from above, is:

- ○ to the right.
- ○ to the left.
- ○ up.
- ○ down.

**Explanation:**
When a current flows through a wire, it creates a magnetic field around the wire. According to the right-hand rule, if you point the thumb of your right hand in the direction of the current, the curl of your fingers shows the direction of the magnetic field. In this scenario, the direction of the current is from the positive terminal to the negative terminal of the battery resulting in a magnetic field that circles the wire. The correct answer to the question is determined by applying the right-hand rule to this setup.
Transcribed Image Text:**Magnetic Field Around a Current-Carrying Wire** **Description:** A straight wire is lying flat on a horizontal table. The wire is connected to a battery, as shown in the diagram below. **Diagram:** The diagram depicts a horizontal wire connected to a battery. The battery symbol is on the left, with a positive terminal at the top and a negative terminal at the bottom. The wire is connected vertically on the right side of the battery. **Question:** The direction of the magnetic field right above the wire, as viewed from above, is: - ○ to the right. - ○ to the left. - ○ up. - ○ down. **Explanation:** When a current flows through a wire, it creates a magnetic field around the wire. According to the right-hand rule, if you point the thumb of your right hand in the direction of the current, the curl of your fingers shows the direction of the magnetic field. In this scenario, the direction of the current is from the positive terminal to the negative terminal of the battery resulting in a magnetic field that circles the wire. The correct answer to the question is determined by applying the right-hand rule to this setup.
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