Question

7 while working on her science fair project, venus connected a battery to a circuit that contained a light bulb. venus decided to change the be voltage, but she kept the same light bulb. what will happen to the brightness of the bulb? a the brightness will decrease because the current will decrease b the brightness will decrease because the current will increase c the brightness will increase because the current will decrease d the brightness will increase because the current will increase

Explanation:

According to Ohm's Law \(I = \frac{V}{R}\). Since the light bulb (resistance \(R\)) remains the same and voltage \(V\) is increased, current \(I\) will increase. The power \(P = I^{2}R\) (or \(P = VI\)) dissipated by the bulb, which determines its brightness, is directly related to current. An increase in current leads to an increase in power and thus brightness.

Answer:

D. The brightness will increase because the current will increase