Choose the word or phrase that is most closely associated with the given word. You may use a choice more than once or not at all. Eliminate those choices that you think to be incorrect and mark the letter of your choice on the answer sheet
(1)Graham's law of diffusion
(2)Charles's law
(3)Ohm's law
(4) Gresham's law
`I=E/R`

Explanation

To solve the question, we need to identify which of the given phrases is most closely associated with the equation \( I = \frac{E}{R} \).

### Step-by-Step Solution:

1. **Identify the Equation**: The equation given is \( I = \frac{E}{R} \). Here, \( I \) represents current, \( E \) represents voltage (or electromotive force), and \( R \) represents resistance.

2. **Understand the Components**:
- **Current (I)**: The flow of electric charge.
- **Voltage (E)**: The potential difference that drives the current.
- **Resistance (R)**: The opposition to the flow of current.

3. **Recognize the Law**: The equation \( I = \frac{E}{R} \) can also be rearranged to \( E = I \cdot R \). This relationship is known as Ohm's Law.

4. **Evaluate the Options**:
- (1) Graham's law of diffusion: This relates to the diffusion of gases and is not related to electricity.
- (2) Charles's law: This relates to the volume of gas and temperature, not related to electricity.
- (3) Ohm's law: This directly relates to the relationship between current, voltage, and resistance.
- (4) Gresham's law: This pertains to economics and currency, not related to electricity.
- `I=E/R`: This is the same as the equation given, confirming that it is indeed Ohm's law.

5. **Conclusion**: The only option that is directly associated with the equation \( I = \frac{E}{R} \) is **Ohm's law**, which corresponds to option (3).

### Final Answer:
The correct answer is **(3) Ohm's law**.