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The variation between  has been shown by  graph for heater filament.

a)

b)

c)

d)



Question ID - 150337 | SaraNextGen Top Answer

The variation between  has been shown by  graph for heater filament.

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

As the current in heater filament increases, it gets more heated, hence its temperature increases and thereby its resistance increases. Due to which the current will decrease. Hence the variation of  and  for heater filament will as shown in Fig.(a)

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