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Question
Fri July 29, 2011 By: Hardik Gupta

# Please help me with the following questions:- 1.state the condition in which the terminal voltage across a secondary cell is equal is equal to emf? 2.Assuming that electrons are free inside the solid, sketch graphically the distribution n(v) of electron with velocity v. 3.A potential difference v is applied across a conductor of length L and diameter D.How are the electric field E and the resistance R of the conductor effected when in turn: (1)v is halved, (2)L is doubled, (2) Dis doubled? justify your answers in each case.

Mon August 01, 2011
Please post one query at a time.

The terminal voltage across a secondary cell is equal to its e.m.f. when no current is drawn from it i.e., it is in an open circuit.

Related Questions
Wed January 18, 2017

# A cell of emf E and internal resistance r is connected to two external resistance R1 and R2 and a perfect ammeter.The current in the circuit is measured in four different situation: (i)without any external resistance in the circuit (ii)with resistance R1 only (iii)with Ri and R2 in series combination (iv)with R1 and R2 in parallel combination The currents measured in the four cases are 0.42A,1.05A,1.4A and 4.2A,but not necessarily in that order.Identify the currents corresponding to the four cases mentioned above.

Thu November 24, 2016

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