Advertisements
Advertisements
प्रश्न
An electric bulb draws 1.2 A current at 6.0 V. Find the resistance of filament of bulb while glowing.
Advertisements
उत्तर
Current (I) = 1.2 A
Potential Difference/Voltage (V) = 6.0 V
Resistance (R) = ?
According to Ohm's Law:
V = IR
Then R = `"V"/"I"`
R = `6/1.2`
R = 5 Ω
APPEARS IN
संबंधित प्रश्न
Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?
The graph between V and I for a conductor is a straight line passing through the origin.
Which law is illustrated by such a graph?
A resistance of 40 ohms and one of 60 ohms are arranged in series across 220 volt supply. Find the heat in joules produced by this combination of resistances in half a minute.
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?
State the limitations of Ohm’s law.
State microscopic form of Ohm’s law.
State macroscopic form of Ohm’s law.
Write a short note on superconductors?
You are provided with a resistor, a key, an ammeter, a voltmeter, four cells of 1.5 V each and few connecting wires. Using circuit components, draw a labelled circuit diagram to show the setup to study Ohm's law.
State the relationship between potential difference (V) across the resistor and the current (I) flowing through it. Also draw V-I graph, taking V on the X-axis.
How is electric current related to the potential difference across the terminals of a conductor?
Draw a labelled circuit diagram to verify this relationship.
