Advertisements
Advertisements
प्रश्न
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.
Advertisements
उत्तर
Resulting resistance in parallel
`1/"R" = 1/1 + 1/2`
`= (2 + 1)/2`
`= 3/2`
∴ R = `2/3` Ω
V = 2V
∴ current in circuit I = `"V"/"R"`
I = `2/(2/3)`
= `2/2 xx 3`
= 3 A
Now current through 1 Ω resistor I1 = `"V"/"R"_1`
∴ I1 = `2/1`
= 2 A
Current through 2 Ω resistor I2 = `"V"/"R"_2`
∴ I2 = `2/2`
= 1 A
or I2 = I - I1
= 3 - 2
= 1 A
APPEARS IN
संबंधित प्रश्न
State two causes of energy loss in a transformer.
What do the letters p.d. stand for?
Potential difference is measured in _________ by using a ___________ placed in ___________ across a component.
How is a voltmeter connected in the circuit to measure the potential difference between two points? Explain with the help of a diagram.
A current of 5 amperes flows through a wire whose ends are at a potential difference of 3 volts. Calculate the resistance of the wire.
Ohm's law state a relation between potential difference and ___________.
The differences between the electrostatic potential of the positive end the negative end of an electric cell is the ______ of the cell.
Find the resistance of a conductor if the electric current flowing through it is 0.35 A when the potential difference across it is 1.4 V.
From the following observations taken while determining the resistance of a conductor, draw the current-voltage graph and calculate the resistance of conductor. Is the conductor ohmic?
| Ammeter reading I (in ampere) | Voltmeter reading V (in volt) |
| 0.2 | 0.4 |
| 0.3 | 0.6 |
| 0.5 | 1.0 |
| 0.8 | 1.6 |
| 1.5 | 3.0 |
Suppose there are three resistors A, B, and C having resistances r1, r2, and r3 respectively. If R represents their equivalent resistance, establish the following relation R = r1 + r2 + r3 when joined in series.
