Question

plzzz answer this
its from physics chapter light

Answer 1

since parallel...a1 and a3 unaffected

Answer 2

Since the bulbs are connected in parallel, the potential difference across each bulb remains the same. And since the resistance of each bulb 1 and 3 also doesn't change the readings of A1 and A3 (i.e. the current) won't change either.

Hence there is no change in the readings of A1 and A3.