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Electric Circuit

A student con...

Question

A student connects two lamps in the circuit shown.The emf of the two batteries is different
Which of the following statements are correct ?
i. When keys 1, 2, 3 and 4 are closed, bulbs A and B will both glow
ii. When key 2 and 4 are closed bulb A will glow
iii.When 1 and 4 are closed, bulb A will glow
iv.When 2, 3 and 4 are closed, both A and B will glow

A

only ii

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B

only iv

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C

i, ii and iv

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D

ii and iii

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Solution

The correct option is D ii and iii

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