The variation between V-I has shown by the following four graphs. Which is the V-I graph for heating filament?

Question

The variation between V-I has shown by the following four graphs. Which is the V-I graph for heating filament? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

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 V and I for heater filament will as shown in fig.(a).

Q. The variation between $V - I$ has shown by the following four graphs. Which is the $V - I$ graph for heating filament?

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 $V$ and $I$ for heater filament will as shown in fig.(a).

Q. The variation between V−I has shown by the following four graphs. Which is the V−I graph for heating filament?

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 V and I for heater filament will as shown in fig.(a).

Q. The variation between $V - I$ has shown by the following four graphs. Which is the $V - I$ graph for heating filament?

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 $V$ and $I$ for heater filament will as shown in fig.(a).