Advertisements
Advertisements
Question
What do the letters p.d. stand for?
Solution
The acronym p.d. stands for the potential difference between two points in an electric circuit.
APPEARS IN
RELATED QUESTIONS
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.
How much work is done when one coulomb charge moves against a potential difference of 1 volt?
Potential difference is measured in _________ by using a ___________ placed in ___________ across a component.
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when:
a charge of 5 C passes through it?
What is Ohm's law? Explain how it is used to define the unit of resistance.
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.
What would you suggest to a student if while performing an experiment he finds that the pointer/needle of the ammeter and voltmeter do not coincide with the zero marks on the scales when the circuit is open? No extra ammeter/voltmeter is available in the laboratory.
An electric bulb draws 0.5 A current at 3.0 V. Calculate the resistance of the filament of the bulb.
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres (σ1/σ2 ) is ______
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.
