Question Answers

Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 20 - Heating Effects of Current and Instruments > A torch bulb rated 4.5 W, 1.5 V is connected as in figure. The emf of the cell needed to make the bulb glow at full intensity is

A torch bulb rated 4.5 W, 1.5 V is connected as in figure. The emf of the cell needed to make the bulb glow at full intensity is

1.5 V is connected as in figure. The emf of the cell needed to make the bulb glow at full intensity is A torch bulb rated 4.5 W