Which bulb will glow when switch is turned on

Bulb 1

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Bulb 2

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Both a and b

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Solution

The correct option is C
Both a and b

In figure 1 positive terminal of the battery is connected to the p-type semiconductor material.It is forward biased. In figure 2 n-type material is connected to the negative terminal of the battery. It is also forward biased.Thus both bulb 1 and bulb 2 will glow.

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Similar questions

B_{1}

B_{2}

Two bulbs A and B are connected through switches $S_{1}$ and $S_{2}$ as shown. Which of the following statement is true:

Question 5

In the circuit shown below, when the switch is moved to ‘ON’ position,

(a) the bulb A will glow first.

(b) the bulb B will glow first.

(d) all bulbs will glow together.

Question 3

Three bulbs A, B, C are connected in a circuit as shown in Figure. When the switch is ‘ON’

(a) bulb C will glow first

(b) bulb B and C will glow simultaneously and bulb A will glow after some time

(d) the bulbs will glow in the order A, B and C

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