Advertisements
Advertisements
प्रश्न
In the circuit shown below:
The potential difference across the 3 Ω resistor is:
विकल्प
`1/9`V
`1/2` V
1 V
2 V
उत्तर
1V
The resistors of 1 Ω, 2 Ω and 3 Ω are connected in series. Therefore, the net resistance,
R = R1 +R2 +R3
R = 1 Ω + 2 Ω + 3 Ω = 6 Ω
Current in the circuit will be,
I = V/R
or I = 2/6 = 1/3 A
Current = `1/3`A
Therefore, the voltage across the 3 Î resistor,
V = IR
or V= `1/3xx3` = 1 V
APPEARS IN
संबंधित प्रश्न
Name a device that help to measure the potential difference across a conductor.
If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase?
Calculate the power used in the 2 Ω resistor in each of the following circuits: a 6 V battery in series with 1 Ω and 2 Ω resistors.
Define the term ‘volt’.
The device used for measuring potential difference is
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.
What is the measure of the work done on the unit positive charge to bring it to that point against all electrical forces?
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 ______.
