In a electric circuit ammeter and volotmeter are used to verify ohm's law hwich of the following is true.

Options

A. Ammeter connected in series and voltmeter connected in parellel
B. Voltmerter connected in series and ammeter connected in parallel
C. Both can be connected in parellel
D. Both can be connected in series

Answer

To verify Ohm's law using an ammeter and a voltmeter in an electric circuit, we need to understand how to properly connect these instruments. Here’s a step-by-step solution to the question:

### Step-by-Step Solution:

1. **Understanding Ohm's Law**:
Ohm's law states that the voltage (V) across a resistor is directly proportional to the current (I) flowing through it, given by the equation \( V = I \times R \), where R is the resistance.

2. **Identifying the Instruments**:
- **Ammeter**: Measures the current (I) flowing through the circuit.
- **Voltmeter**: Measures the voltage (V) across the resistor.

3. **Connection of the Ammeter**:
- The ammeter must be connected in series with the resistor to measure the current flowing through it. If the ammeter is connected in parallel, it will not measure the current through the resistor correctly, as it would divert the current away from the resistor.

4. **Connection of the Voltmeter**:
- The voltmeter must be connected in parallel with the resistor to measure the voltage across it. If the voltmeter is connected in series, it will not measure the voltage across the resistor accurately.

5. **Evaluating the Options**:
- **Option 1**: Ammeter connected in series and voltmeter in parallel. (This is correct)
- **Option 2**: Voltmeter connected in series and ammeter connected in parallel. (This is incorrect)
- **Option 3**: Both connected in parallel. (This is incorrect)
- **Option 4**: Both connected in series. (This is incorrect)

6. **Conclusion**:
The correct configuration to verify Ohm's law is to connect the ammeter in series with the resistor and the voltmeter in parallel with the resistor. Therefore, the correct answer is **Option 1**.