Consider arrangements A and B for making a torch:Now, consider the fol

1.	Consider arrangements A and B for making a torch:Now, consider the following statements. I. Torch A is brighter. II. Torch B is brighter. III. Torch A lasts longer. IV. Torch B lasts longer. Which of the above statements are correct? (a) Statements I and III are correct (b) Statements II and IV are correct (c) Statements I and IV are correct (d) Statements II and III are correct
Answer» Correct option is (c) Statements I and IV are correct In case A, voltage across bulb is higher, so lamb will burn brighter. In case B, voltage is same as either of battery but each battery supplies only half of current, hence the batteries will lasts twice as long.

Consider arrangements A and B for making a torch:Now, consider the following statements. I. Torch A is brighter. II. Torch B is brighter. III. Torch A lasts longer. IV. Torch B lasts longer. Which of the above statements are correct? (a) Statements I and III are correct (b) Statements II and IV are correct (c) Statements I and IV are correct (d) Statements II and III are correct

Answer»

Correct option is (c) Statements I and IV are correct

In case A, voltage across bulb is higher, so lamb will burn brighter. In case B, voltage is same as either of battery but each battery supplies only half of current, hence the batteries will lasts twice as long.

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