Two batteries one of the emf3V, internal resistance In and the other of emf l SV, internal resistance `2Omega` are connected in series with a resistanceR as shown. If the potential difference between points a and b is zero, the resistance R is :

Two batteries one of the emf 3V , internal resistance 1Omega and the other of emf 15 V , internal resistance 2Omega are connected in series with a resistance R as shown. If the potential difference between points a and b is zero, the resistance R in Omega is

Two batteries one of the emf 3V , internal resistance 1Omega and the other of emf 15 V , internal resistance 2Omega are connected in series with a resistance R as shown. If the potential difference between points a and b is zero, the resistance R in Omega is

Two batteries one of the emf 3V, internal resistance 1 ohm and the other of emf 15 V , internal resistance 2 ohm are connected in series with a resistance R as shown . If the potential difference between a and b is zero the resistance of R in ohm is

Two batteries, one of emf 18V and internal resistance 2Omega and the other of emf 12 and internal resistance 1Omega , are connected as shown. The voltmeter V will record a reading of

Two batteries, one of emf 18V and internal resistance 2Omega and the other of emf 12 and internal resistance 1Omega , are connected as shown. The voltmeter V will record a reading of

Two batteries, one of emf 18V and internal resistance 2Omega and the other of emf 12 and internal resistance 1Omega , are connected as shown. The voltmeter V will record a reading of

Two batteries, one of emf 18V and internal resistance 2Omega and the other of emf 12 and internal resistance 1Omega , are connected as shown. The voltmeter V will record a reading of

Two sources of emf 6 V and internal resistance 3 Omega and 2 Omega are connected to anexternal resistance R as shown. If potential difference across battery A is zero, then the value of R is

A battery of emf 2V and internal resistance 0.5(Omega) is connected across a resistance in 1 second?