As shown in the figure, a student set-up an electric circuit to find the equivalent resistance of two resistors in series. In this circuit :
(A) Resistors have been connected correctly, but the voltmeter has been wrongly connected.
(B) Resistors have been connected correctly but the ammeter has been wrongly connected.
(C) Resistance as well as the voltmeter have been wrongly connected.
(ID) Resistors as well as ammeter have been wrongly connected.
CBSE Class X Science VSA (1 Mark)
Answers
Answer:
dear mate please write the full question...where is the fig. in which the resistances are connected....✔✔
To find the equivalent resistance of two resistors (R1 and R2) following points are taken into consideration:
1) If the two resistors are connected in parallel then the equivalent resistance (R) is
1/R = 1/R1 + 1/R2
2) if the two resistors are connected in series then the equivalent resistance is
R = R1 + R2
3) A device used to measure the current flowing through the resistors is known as an ammeter, and it is always connected in series with the resistors
4) The voltage or the potential difference between the two resistors is found with the help of a voltmeter, which is always connected in parallel with the supply
5) V = I × R
Where V = Voltage (Volts)
I = Current (Ampere)
R = Resistance (Ohms)
If any of the above mentioned five rules are not followed properly then the ammeter or the voltmeter will not show a reading and you will get an error.