Question

A 3 column table with 5 rows labeled table A. The first column is labeled voltage in volts with entries 1.0, 5.0, 10, 20, 50. The second column is labeled current: calculated in amps with no entries. The last column is labeled current: experimental in amps.
According to Ohm’s law, determine the calculated current for these values in Table A.

voltage = 5 V, resistance = 20 Ω:

Answer 1

To calculate the current using Ohm's Law, you can use the formula:

\[ I = \frac{V}{R} \]

where:
- \( I \) is the current in amps,
- \( V \) is the voltage in volts,
- \( R \) is the resistance in ohms.

From your given information, we need to calculate the current for the voltage values in Table A and we will use the specified resistance of 20 Ω to demonstrate.

### Given:
- Voltage (\( V \)) = 5 V
- Resistance (\( R \)) = 20 Ω

### Calculating Current:
Using the formula:

\[ I = \frac{5 \text{ V}}{20 \text{ Ω}} = 0.25 \text{ A} \]

This means that when the voltage is 5 V and the resistance is 20 Ω, the calculated current is 0.25 A.

### Table A:

| Voltage (V) | Current: Calculated (A) | Current: Experimental (A) |
|-------------|--------------------------|--------------------------|
| 1.0 | 0.05 | |
| 5.0 | 0.25 | |
| 10.0 | 0.5 | |
| 20.0 | 1.0 | |
| 50.0 | 2.5 | |

### Current for Remaining Voltages (with 20 Ω resistance):
- For 1.0 V: \( I = \frac{1.0 \text{ V}}{20 \text{ Ω}} = 0.05 \text{ A} \)
- For 10.0 V: \( I = \frac{10.0 \text{ V}}{20 \text{ Ω}} = 0.5 \text{ A} \)
- For 20.0 V: \( I = \frac{20.0 \text{ V}}{20 \text{ Ω}} = 1.0 \text{ A} \)
- For 50.0 V: \( I = \frac{50.0 \text{ V}}{20 \text{ Ω}} = 2.5 \text{ A} \)

The calculated current for each voltage entry has been added to the table accordingly.