Advertisements
Advertisements
प्रश्न
A resistance of 20 ohms has a current of 2 amperes flowing in it. What potential difference is there between its ends?
उत्तर
Here:
Resistance, R = 20 Ω
Current, I = 2 A
Substituting these values in the Ohm's equation, V/I = R:
Potential difference, V = I x R = 2 x 20 = 40 V
APPEARS IN
संबंधित प्रश्न
You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is more than 7Ω?
1) Draw a diagram for the arrangement
2) Calculate the equivalent resistance.
What is the SI unit of potential difference?
Potential difference is measured in _________ by using a ___________ placed in ___________ across a component.
Why do electricians wear rubber hand gloves while working with electricity?
The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?
For the circuit shown in the diagram below:
What is the value of:
(i) current through 6 Ω resistor?
(ii) potential difference across 12 Ω resistor?
Electric cells having 2V potential difference each have been connected in the form of a battery. What will be the total potential difference of the battery in both cases?
Electric potential is a ____________.
Assertion (A): Charges flow from higher potential to lower potential.
Reason (R): Current flows mainly due to the flow of electrons.
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
