In the given circuit the internal resistance of the 18 V cell is negligible. If `R_(1)=400 Omega` and the reading of an ideal voltmeter across `R_(4)` is 5V, then the value of `R_(2)` will be :

In the given circuit the internal resistance of the 18 V cell is negligible. If R_1=400 Omega,R_3=100 Omega and R_4= 500 Omega and the reading of an ideal voltmeter across R_4 is 5 V, then the value of R_2 will be :

In the given circuit the internal resistance of the 18 V cell is negligible. If R_1 = 400 Omega, R_3 = 100 Omega and R_(4) = 500 Omega and the reading of an ideal voltmeter across R_4 is 5 V, then the value of R_2 (in Omega will be _____.

The reading of ideal voltmeter V connected across R and the circuit shown is

In the circuit shown in figure ammeter and voltmeter are ideal. If E=4 V,R=9Omega and r=1Omega then readings of ammeter and voltmeter are

In the circuit shown in figure ammeter and voltmeter are ideal. If E=4 V,R=9Omega and r=1Omega then readings of ammeter and voltmeter are

In the circuit shown in figure ammeter and voltmeter are ideal. If E=4 V,R=9Omega and r=1Omega then readings of ammeter and voltmeter are

Assetion : In the following circuit emf is 2 V and internal resistance of the cell is 1 Omega and R = 1 Omega , then reading of the voltmeter is 1 V . Reason : V = E - ir where E = 2 v, i= (2)/(2) = 1 A and R = 1 Omega

Assetion : In the following circuit emf is 2 V and internal resistance of the cell is 1 Omega and R = 1 Omega , then reading of the voltmeter is 1 V . Reason : V = E - ir where E = 2 v, i= (2)/(2) = 1 A and r = 1 Omega

Assertion : In the following circuit e.m.f. is 2 V internal resistance of the cell is 1 Omega and R = 1 Omega the reading of the voltmeter is 1 V . Reason : V = E - ir , where E = 2 V, i= 1 A and R = 1 Omega

In the circuit cell are of equal emf E but of difference internal resistance r_(1) = 6 Omega reading of the ideal voltmeter connected across cell 1 is zero The value of the external resistance R is ohm is equal to