Increases
Decreases
Remains same
None of the above
Answer is Right!
Answer is Wrong!
The correct answer is: B. Decreases
When more than one lamp are switched on in a lamp load, the total resistance of the load decreases. This is because the resistance of each lamp is in parallel with the resistance of the other lamps. When resistors are in parallel, the total resistance is less than the resistance of any one resistor.
The following is a more detailed explanation of each option:
- Option A: Increases. This is incorrect because the total resistance of the load decreases when more than one lamp are switched on.
- Option B: Decreases. This is the correct answer because the total resistance of the load decreases when more than one lamp are switched on.
- Option C: Remains same. This is incorrect because the total resistance of the load decreases when more than one lamp are switched on.
- Option D: None of the above. This is incorrect because option B is the correct answer.