1. in a series circuit, as light bulbs are added, the voltage at the battery increases/decreasees/remains the same
2. in a series circuit, as light builbs are added, the current at the battery increases/decreases, remains the same.

Check the following equation for dimensional homogeneity: ⅆ mv=∫t1t2(f⁢cosθ)ⅆt where m is mass, v is velocity, f is force, θ is an angle, and t is time. check that each term in the equation has the following dimensions: [malbec] where you are to choose the coefficients a, b, c.