The torch bulb draws voltage of 3v if the resistance is 1.2 ohms then required current is
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Answered by
1
Answer:
Explanation:
Given,
voltage =3v
Resistance =1.2ohm
We know i=v/R
So, i=3/1.2
i=2.5 ampere
Answered by
2
the resistance of the bulb when it is glowing=v/I
=3 V/0.3 A
=30/3 ohm
=10 ohm
when the bulb is put on then, electric current passes through the filament and hence increases the temperature of the filament.
and we know that the resistance increases with the temperature.
i hope it helps u
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