An ammeter and a voltmeter are initially connected in series to a battery of zero internal resistance. When switch is closed the reading S1 of the voltmeter becomes half of the initial, whereas the reading of the ammeter becomes double. If now switch S2 is also closed, then reading of ammeter becomes :

3/2 times the value after closing S 1

An ammeter and a voltmeter are initially connected in series to a battery of zero internal resistance. When switch is closed the reading S1 of the voltmeter becomes half of the initial, whereas the reading of the ammeter becomes double. If now switch S2 is also closed, then reading of ammeter becomes :

3/2 times the value after closing S 1

3/4 times the value after closing S 1

3/2 times the value after closing S 1

Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

An ammeter and a voltmeter are initially connected in series to a battery of zero internal resistance. When switch is closed the reading S₁ of the voltmeter becomes half of the initial, whereas the reading of the ammeter becomes double. If now switch S₂ is also closed, then reading of ammeter becomes :

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

3/4 times the value after closing S₁

3/2 times the value after closing S₁

3/2 times the initial value

3/4 times the initial value

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Initially : V_V + V_A = 6
V_V and V_A being the potential across voltmeter and ammeter respectively. After closing S₁,
$\frac{V_{V}}{2} + 2 V_{A} = 6 \Rightarrow V_{V} = 4, V_{A} = 2$ after closing $S_{2} : V_{V} = 0, V_{A} = 6$
So that value after closing S₂ is 3/2 times the value after closing S₁

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET