Advertisements
Advertisements
प्रश्न
Calculate the current flowing through a wire of resistance 5 Ω connected to a battery of potential difference 3 V.
उत्तर
Potential Difference/Voltage (V) = 3 V
Resistance (R) = 5Ω
Current (I) = ?
According to Ohm's Law:
V = IR
Then I = `"V"/"R"`
I = `3/5`
= 0.6 A
APPEARS IN
संबंधित प्रश्न
Name the physical quantity whose unit is "ohm".
Two metallic spheres A and B kept on insulating stands are in contact with each other. A positively charged rod P is brought near the sphere A as shown in the figure. The two spheres are separated from each other, and the rod P is removed. What will be the nature of charges on spheres A and B?
A metal sphere is kept on an insulting stands. A negatively charged rod is brought near it, then the sphere is earthed as shown. On removing the earthing, and taking the negatively charged rod away, what will be the nature of charge on the sphere? Give reason for your answer.
Define the following:
(i) Coulomb
(ii) Ohm
The ratio of the potential difference to the current is known as ________.
Obtain the macroscopic form of Ohm’s law from its microscopic form and discuss its limitation.
Explain the equivalent resistance of a series resistor network.
A student carries out an experiment and plots the V-I graph of three samples of nichrome wire with resistances R1, R2 and R3 respectively. Which of the following is true?
The heat produced by a 100 w heater in 2 minute is equal to
Consider a current carrying wire (current I) in the shape of a circle. Note that as the current progresses along the wire, the direction of j (current density) changes in an exact manner, while the current I remain unaffected. The agent that is essentially responsible for is ______.
