Student Login

Home›Chapters›Current Electricity PYQs›Kirchhoff's Laws & Measuring Instruments›Question 147

JEE Main 2020 (3 Sep, Shift 2) · Kirchhoff's Laws & Measuring Instruments

Kirchhoff's Laws & Measuring Instruments question from JEE Main 2020 (3 Sep, Shift 2)

Q147JEE Main 2020 · 3 SEP · SHIFT 2Medium

Kirchhoff's Laws & Measuring Instruments

Two resistors 400 $\Omega$ and 800 $\Omega$ are connected in series across a 6 V battery. The potential difference measured by a voltmeter of 10 k $\Omega$ across 400 $\Omega$ resistor is close to:

Show answer and solution

Answer: (b)

$400\ \Omega \| 10\ \text{k}\Omega = \dfrac{400 \times 10000}{10400} \approx 384.6\ \Omega$
Total $R = 384.6 + 800 = 1184.6\ \Omega$
$V = 6 \times \dfrac{384.6}{1184.6} \approx 1.95\text{ V}$
So the answer is (b) 1.95 V.

Report a mistake

More questions on Kirchhoff's Laws & Measuring Instruments

An ammeter of resistance 20 Ω gives full scale deflection, when 1 mA current flows…MHT CET 2020 (16 Oct, Shift 1)
The range of an ammeter of resistance ' G can be increased from ' I ' to ' nI ' by…MHT CET 2019 (2 May, Shift 2)
A galvanometer has resistance of 100 Ω and a current of 10 mA produces full scale…MHT CET 2019 (2 May, Shift 1)
A moving coil galvanometer allows a full scale current of 10–4 A. A series resistance of…JEE Main 2019 (10 Apr, Shift 1)
The resistance of a galvanometer is 50 ohm and the maximum current which can be passed…JEE Main 2019 (9 Apr, Shift 2)
A moving coil galvanometer has resistance 50 Ω and it indicates full deflection at 4mA…JEE Main 2019 (9 Apr, Shift 1)
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is…MHT CET 2019 (2 May, Shift 1)
In the given electrical circuit, which one of the following equations is a correct…MHT CET 2019 (2 May, Shift 2)