A 30, 90 W lamps are to be operated on a 120 V DC line. For proper glow, a resistor of ……. 
should be connected in series with the lamp.
should be connected in series with the lamp.Question ID - 151173 | SaraNextGen Top Answer A 30, 90 W lamps are to be operated on a 120 V DC line. For proper glow, a resistor of ……. should be connected in series with the lamp.
A 30, 90 W lamps are to be operated on a 120 V DC line. For proper glow, a resistor of ……. should be connected in series with the lamp.
1 Answer
127 votes
Answer Key / Explanation : (30) -
Resistance of the lamp
Current in the lamp
When lamp is operated on a 120 V, then resistance
Thus, for proper glow, the resistance required to the put in series will be
127 votes
Answer Link
127