Question

Or, State Kirchoff's current and voltage laws.
6V
20
In the given circuit, determine the current
through 1 ohm resistance.
312
32
Why is potentiometer preferred to voltmeter for the measurement of
cell? Explain.​

Answer 1

Answer:

Explanation:

Kirchhoff's 1st Law=The algebraic sum of currents in circuits meeting at a junction is 0 .i.e. the amount of incoming current is equal to the amount of outgoing current. It is based on conservation of charge.

Kirchhoff's 2nd Law=The algebraic sum of potential charges in each part of the closed circuit is 0. It is based on conservation of energy.

Potentiometer is preferred over voltmeter for the measurement of cell because it is said to act as an ideal voltmeter since it is based on cancellation of currents.i.e. it does not draw current from main circuit due to which accurate measurement is attained.

Sorry but i didn't get the second part of the question...could you be more precise..