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A torch bulb rated as 4.5 W, 1.5 V is connected as shown in figure 12 given below. What should be…
A torch bulb rated as 4.5 W, 1.5 V is connected as shown in figure 12 given below.
(i)[1.0]
What should be the e.m.f. of the cell required to make this bulb glow at full intensity?
- (a)$4.5\text{ V}$
- (b)$1.5\text{ V}$
- (c)$2.67\text{ V}$
- (d)$13.5\text{ V}$
(ii)[1.0]
What is the current passing through $1\ \Omega$ resistor?
- (a)$4.5\text{ A}$
- (b)$1.5\text{ A}$
- (c)$2.67\text{ A}$
- (d)$13.5\text{ A}$
Answer
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From ISC 2022 Specimen Physics Paper 1, question 40.