CBSE Class 10 Science 2019 Outside Delhi Set 1

Question : 27 of 27

Marks: +1, -0

The current flowing through a resistor connected in a circuit and the potential difference developed across its ends are as shown in the diagram by milliammeter and voltmeter readings respectively :
(a) What are the least counts of these meters?
(b) What is the resistance of the resistor?

Solution:

(a)

10 {\mA}

and

0.1 {\V}

(b)

{\V}=2.4

volt,

{\I}=250 {\mA}=0.25 {\A}

From Ohm's law.

{\R}=\;{ {\V}}/{ {\I}}=\;{2.4}/{0.25}=9.6 Ω

Go to Question:

Prev Question