A 20 ? light bulb and a 10 ? light bulb are placed in parallel with one another

Question

A 20 ? light bulb and a 10 ? light bulb are placed in parallel with one another in a circuit (along with a battery). In this situation (choose one of following defend your choice with an EXPLANATION).

a) The 20 ? light bulb will have the same voltage drop as the 10 ? light bulb.

b) The 20 ? light bulb will have the same amount of brightness (i.e. power dissipation) as the 10 ? light bulb.

c) The 20 ? light bulb will be brighter than the 10 ? light bulb.

d) The 10 ? light bulb will be brighter than the 20 ? light bulb.

e) The above statements a) and b) are both correct

Explanation / Answer

ans is both a and d.

because in parallel connection voltage drop will b e same.

power dissipated = (voltage)2/R

so 10ohm resistance bulb will have more power dissipation as compared to 20 ohm resistance bulb

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