Thickness of the wire affects the brightness of the bulb. Do you agree or disagree. Justify your answer. Share with your friends Share 0 Sanjay Singh answered this Dear student Resistance of wire is inversely proportional to the thickness of the wire .Greater the thickness smaller the resistance .So for a givenpotential difference P α 1R hence if resistance decreases power increases and therefore brightness of bulb is will increase.Regards 1 View Full Answer Dan answered this i agree because the flow of current will flow in a bigger amount and its safer 2 Arjav Jain answered this i agree 1 Kowshik Rutwa answered this I also agree the flow of current will be bigger 0