A potentiometer wire of length `100 cm` having a resistance of `10 Omega` is connected in series with a resistance `R` and a cell of emf `2V` of negligible internal resistance. A source of emf

of `10 mV` is balanced against a length of `40 cm` of the potentiometer wire. What is the value of resistance `R` ?

A potentiometer wire of length 100 cm has a resistance of 100Omega it is connected in series with a resistance and a battery of emf 2 V and of negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?

A potentiometer wire of length 100 cm has a resistance of 10 Omega . It is connected in series with a resistance R and cell of emf 2 V and negligible resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of R ?

A uniform potentiometer wire AB of length 100 cm has a resistance of 5Omega and it is connected in series with an external resistance R and a cell of emf 6 V and negligible internal resistance. If a source of potential drop 2 V is balanced against a length of 60 cm of the potentiometer wire, the value of resistance R is

AB is a potentiometer wire of length 100 cm and its resistance is 10Omega . It is connected in series with a resistance R = 40 Omega and a battery of emf 2 V and negligible internal resistance. If a source of unknown emf E is balanced by 40 cm length of the potentiometer wire, the value of E is

The potentiometer wire of length 200 cm has a resistance of 20 Omega . It is connected in series with a resistance 10 Omega and an accumulator of emf 6 V having negligible internal resistance. A source of 2.4 V is balanced against length 1 of the potentiometer wire. Find the length l of the potentiometer wire. Find the length l

The potentiometer wire of length 100cm has a resistance of 10Omega . It is connected in series with a resistance of 5Omega and an accumulaot or emf 3V having negligible resistance. A source 1.2V is balanced against a length 'L' of the potentionmeter wire. find the value of L.

AB is a potentiometer wire of length 100cm and its resistance is 10ohm. It is connected in series with a resistance R=40 ohm and a battery of e.m.f. wV and negigible internal resistance. If a source of unknown e.m.f. E is balanced by 40cm length of the potentiometer wire, the value of E is:

A potentiometer wire of length 10 m and resistance 10 Omega per meter is connected in serice with a resistance box and a 2 volt battery. If a potential difference of 100 mV is balanced across the whole length of potentiometer wire, then then the resistance introduce introduced in the resistance box will be

A potentiometer wire of length 1 m has a resistance of 10Omega . It is connected to a 6V battery in series with a resistance of 5Omega . Determine the emf of the primary cell which gives a balance point at 40cm.

A 10 m long uniform metallic wire having a resistance of 20 Omega is used as a potentiometer wire. This wire is connected in series with another resistance of 480 Omega and a battery of emf 5 V having negligible internal resistance. If an unknown emf e is balanced across 6 m of the potentiometer wire, calculate : the value of the unknown emfe.