Name the physical quantities of which the units are :
(i) volt, (ii) coulomb, (iii) ohm, (iv) ampere.

Answer

To solve the question, we need to identify the physical quantities corresponding to the given units: volt, coulomb, ohm, and ampere.

### Step-by-Step Solution:

1. **Identify the unit "volt":**
- The volt (V) is the unit of electric potential or potential difference. It measures the work done per unit charge to move a charge between two points in an electric field.
- **Physical Quantity:** Potential difference

2. **Identify the unit "coulomb":**
- The coulomb (C) is the unit of electric charge. It quantifies the amount of electric charge that passes through a conductor when a current of one ampere flows for one second.
- **Physical Quantity:** Electric charge

3. **Identify the unit "ohm":**
- The ohm (Ω) is the unit of electrical resistance. It measures how strongly a material opposes the flow of electric current.
- **Physical Quantity:** Resistance

4. **Identify the unit "ampere":**
- The ampere (A) is the unit of electric current. It represents the flow of electric charge through a conductor.
- **Physical Quantity:** Electric current

### Final Summary:
- (i) Volt - Potential difference
- (ii) Coulomb - Electric charge
- (iii) Ohm - Resistance
- (iv) Ampere - Electric current