Advertisements
Advertisements
Question
What is the unit of electric charge?
Solution
The SI unit of electric charge is coulomb and is denoted by the letter, C.
APPEARS IN
RELATED QUESTIONS
State whether the resistivity of a wire changes with the change in the thickness of the wire.
State the relation between potential difference, work done and charge moved.
Calculate the work done in moving a charge of 4 coulombs from a point at 220 volts to another point at 230 volts.
A cell of e.m.f 2.0 V and internal resistance 1Ω is connected to the resistors of 3Ω and 6Ω in series. Calculate:
(i) the current drawn from the cell,
(ii) the p.d. across each resistor,
(iii) the terminal voltage of the cell and
(iv) the voltage drop.
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
A 10 m long wire of a particular material is of resistance 5Ω What will be the resistance if the wire is stretched to double its length?
A current of 1 ampere flows in a series circuit containing an electric lamp and a conductor of 5 Ω when connected to a 10 V battery. Calculate the resistance of the electric lamp.
Now if a resistance of 10 Ω is connected in parallel with this series combination, what change (if any) in current flowing through 5 Ω conductor and potential difference across the lamp will take place? Give reason.
Inside a hollow charged spherical conductor, the potential ______
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres `(σ_1//σ_2 )` is ______.
Find the potential difference required to flow a current of 300 mA in a wire of resistance 20 Ω.