Study the circuit shown in which three identical bulbs B_(1) B_(2) and B_(3)are connected in parallel with a battery of 4.5 V (i) What will happen to the glow of other two bulbs if the bulb B_(3)gets fused ? (ii) If the wattage of each bulb is 1.5 W, how much reading will the ammeter A show when all the three bulbs glow simultaneously. (iii) Find the total resistance of the circuit.

Study the circuit shown in which three identical bulbs B_(1) B_(2) and

1.	Study the circuit shown in which three identical bulbs B_(1) B_(2) and B_(3)are connected in parallel with a battery of 4.5 V (i) What will happen to the glow of other two bulbs if the bulb B_(3)gets fused ? (ii) If the wattage of each bulb is 1.5 W, how much reading will the ammeter A show when all the three bulbs glow simultaneously. (iii) Find the total resistance of the circuit.
Answer» <P> Solution :(i) Other bulbs will glow with same brightness. (II) When the bulbs are in parallel, wattage will be added (4.5 W) and the AMMETER reading would be `becauseI=(P)/(V) = (4.5 W)/(4.5V)= 1.0 ` Ampere (iii) Since ammeter reading is 1.0 ampere RESISTANCE of the combination is `(4.5V)/(1.0A)= 4.5 Omega`