Q28Multiple choice
B1, B2 and B3 are three identical bulbs connected as shown in Figure 12.8. When all the three bulbs glow, a current of 3A is recorded by the ammeter A.
This question refers to a figure in the original PDF.
- (i)What happens to the glow of the other two bulbs when the bulb B1 gets fused?
- (ii)What happens to the reading of A1, A2, A3 and A when the Fig. 12.8 bulb B2 gets fused?
- (iii)How much power is dissipated in the circuit when all the three bulbs glow together? .QPI#PUYGT3WGUVKQPU
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Hint— (i) The glow of the bulbs B2 and B3 will remain the same. (ii) A1 shows 1 ampere, A2 shows zero, A3 shows 1 ampere and A shows 2 ampere (iii) P = V × I = 4.5 × 3 = 13.5 W .QPI#PUYGT3WGUVKQPU