In the normal position, an object has 12 electrons more than normal, an another object has 7 electrons which is less than a normal condition. If these objects come closer then charge on combined object will be

Options

A. equal to 5 electrons
B. equal to 4 elections
C. equal to 3 electrons
D. None of these

Answer

To solve the problem, we need to determine the total charge on the combined object when two objects with different electron counts come together. Let's break it down step by step.

### Step 1: Understand the Charge of Each Object
- The first object has **12 electrons more than normal**. This means it has a **positive charge** because it has excess electrons.
- The second object has **7 electrons less than normal**. This means it has a **negative charge** because it is deficient in electrons.

### Step 2: Assign Values to the Charges
- Let’s denote the charge of an electron as \( -1 \) unit of charge.
- The first object will have a charge of \( +12 \) units (since it has 12 extra electrons).
- The second object will have a charge of \( -7 \) units (since it is missing 7 electrons).

### Step 3: Calculate the Total Charge
To find the total charge when these two objects come together, we simply add their charges:
\[ \text{Total Charge} = \text{Charge of Object 1} + \text{Charge of Object 2} \]
\[ \text{Total Charge} = (+12) + (-7) \]
\[ \text{Total Charge} = 12 - 7 = 5 \]

### Step 4: Interpret the Result
The total charge on the combined object is **5 units of positive charge**. This indicates that the combined object has **5 electrons more than its normal condition**.

### Final Answer
The charge on the combined object will be **5 electrons more than its normal condition**.

---