An electroscope is used to find the _______ present on a body.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Electroscope:**
- An electroscope is a device used to detect electric charge. It consists of a metal rod and two thin metal leaves or sheets at the bottom.

2. **How it Works:**
- When a charged object is brought near the electroscope, it induces charges in the electroscope. If the object is positively charged, it will attract negative charges from the electroscope, causing positive charges to accumulate at the bottom. If the object is negatively charged, it will repel the negative charges in the electroscope, causing more negative charges to gather at the bottom.

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