Final answer:
The potential difference across a hand-held fan with a resistance of 120 ohms and a current of 0.005 A is calculated using Ohm's law, resulting in a potential difference of 0.6 volts.
Step-by-step explanation:
To find the potential difference across a hand-held fan with a resistance of 120 ohms and a current of 0.005 A flowing through it, we use Ohm's law, which states that the potential difference (V) equals the current (I) times the resistance (R). Mathematically, this is expressed as V = I x R.
Using the given values:
- Resistance (R) = 120 ohms
- Current (I) = 0.005 A
We calculate the potential difference (V) as follows:
V = I x R
V = 0.005 A x 120 ohms
V = 0.6 V
Therefore, the potential difference across the hand-held fan is 0.6 volts.