Physics
A car bulb connected to a 12 volt battery draws 2 A current when glowing. What is the resistance of the filament of the bulb? Will the resistance be more, same or less when the bulb is not glowing.
Related Questions
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
An electric bulb draws 1.2 A current at 6.0 V. Find the resistance of filament of bulb while glowing.
Calculate the current flowing through a wire of resistance 5 Ω connected to a battery of potential difference 3 V.
In an experiment of verification of Ohm's law, following observations are obtained.
Potential difference V (in volt) 0.5 1.0 1.5 2.0 2.5 Current I (in amp) 0.2 0.4 0.6 0.8 1.0 Draw a V-I graph and use this graph to find —
(a) the potential difference V when the current I is 0.5 A.
(b) the current I when the potential difference V is 0.75 V.
(c) the resistance in circuit.