Question

this one too... plz help me​

Answer 1

Explanation:

Given ratio of resistancees = 1 : 4

Let 'x' be a common term

Therefore

Resistance of the first bulb is x and second bulb is 4x

Now as voltage is constant

Therfore using formula P = V^2/R

P1 : P2 = (V^2/x) : (V^2/4x)

P1:P2 = 4:1 (Answer)

option (2)