Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r₁ = 3 r₂ .

Question

Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r 1 = 3 r 2 .

Ramesh V · Answer

Let I be current in circuit and E 1 =1.3V and E 2 =1.5V and E = 1.45V by kirchoffs laws (E 2 -E 1 )-I(R 1 +R 2 ) = 0 and E = E 2 - IR 2 so , 0.05 = IR 2 .........(1) 0.20=I(R 1 +R 2 ) .........(2) on solvine above 2 eqns, we have R 1 = 3R 2 -- regards Ramesh

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Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r 1 = 3 r 2 .

Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r₁ = 3 r₂ .

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Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r 1 = 3 r 2 .

Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r 1 = 3 r2 .

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Two cells A and B of e.m.f 1.3 V and 1.5 V resp are arranged as shown in the figure. The voltmeter reads 1.45 V. The voltmeter is assumed to be ideal. Then show that r₁ = 3 r₂ .