a current of 0.2a flows through a component with a resistance of 40 ohms. calculate the potential difference.

The potential difference VVV across a component can be calculated using Ohm's Law, which states:

V=I×RV=I\times RV=I×R

where

• III is the current flowing through the component (in amperes, A),
• RRR is the resistance of the component (in ohms, Ω\Omega Ω).

Given:

• Current I=0.2 AI=0.2,AI=0.2A,
• Resistance R=40 ΩR=40,\Omega R=40Ω,

The potential difference is:

V=0.2×40=8 VV=0.2\times 40=8,VV=0.2×40=8V

So, the potential difference across the component is 8 volts.