How will the reading in the ammeter `A` of Fig. 6.39 be affected if another identical bulb `Q` is connected in parallel to `P` as shows. The voltage in the mains is maintained at a constant value.
A. The reading will be reduced to one-half.
B. the reading will not be affected.
C. The reading wil be double of the previous one.
D. The reading will be increased fourfold.
