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The Flow of Electrons as Electric Current

Three identic...

Question

Three identical bulbs P, Q and R are connected to a battery as shown in figure. When the circuit is closed

Q and R will be brighter than P

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Q and R will be dimmer than P

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All the bulbs will be equally bright

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Q and R will not shine at all

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Solution

The correct option is B
Q and R will be dimmer than P

If I is the current through Q and R each, then 2I is the current through P. Therefore Q and R will be dimmer than P

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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

L

R

B_{1}

B_{2}

S

L

R

S

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