1
JEE Advanced 2014 Paper 1 Offline
Numerical
+3
-0
A galvanometer gives full scale deflection with 0.006 A current. By connecting it to a 4990 $$\Omega$$ resistance, it can be converted into a voltmeter of range 0-30V. If connected to a $${{2n} \over {249}}\Omega $$ resistance, it becomes an ammeter of range 0-1.5 A. The value of n is
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2
IIT-JEE 2011 Paper 2 Offline
Numerical
+3
-0

Two batteries of different emfs and different internal resistance are connected as shown. The voltage across AB in volts is __________.

IIT-JEE 2011 Paper 2 Offline Physics - Current Electricity Question 12 English

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3
IIT-JEE 2010 Paper 1 Offline
Numerical
+3
-0

When two identical batteries of internal resistance 1 $$\Omega$$ each are connected in series across a resistor R, the rate of heat produced in R is J1. When the same batteries are connected in parallel across R, the rate is J2. If J1 = 2.25 J2, then the value of R in $$\Omega$$ is __________.

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