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

In the given circuit, an ideal voltmeter connected across the 10Omega resistance reads 2V. The internal resistance r, of each cell is:

Ten identical cells each of e.m.f. E and internal resistance r are connected in series to form a closed circuit. An ideal voltmeter connected across three cells, will read

In Fig. A2.6, two cells have equal emf E but internal resistances are r_1 and r_2 . If the reading of the voltmeter is zero, then relation between R, r_1 and r_2 is

A voltmeter has a resistance 30 Omega . What will be its reading, when it is connected across a cell of emf 2 V having internal resistance 10 Omega ?

A voltmeter has a resistance of 100 Omega . What will be its reading when it is connected across a cell of emf 2 V and internal resistance 20 Omega ?

Two cells of the same e.mf. e but different internal resistances r_(1) and r_(2) are connected in series with an external resistance 'R'. The potential drop across the first cell is found to be zero. The external resistance Ris

Two cells of the same e.mf. e but different internal resistances r_(1) and r_(2) are connected in series with an external resistance 'R'. The potential drop across the first cell is found to be zero. The external resistance Ris