What is the ratio of the maximum to the minimum resistance?

Therefore, the ratio of maximum resistance to minimum resistance between any pair of opposite faces of the block is 9 : 1.

Why is the ratio of maximum and minimum resistance obtainable from N wires of resistance R?

The resistance obtained will be maximum when the wires are connected in series. However, when the wires are connected in parallel, the resistance will be minimum.

How can a number of resistors be connected to offer i maximum resistance II Maximum current?

i) To get the maximum resistance, the resistors should be in a series combination. ii) To get the minimum resistance, the resistors should have a parallel combination. Same current will flow through all the resistors. So, all the resistors are connected in series.

How are three resistance connected to get a maximum effective resistance?

First by using series combination and second by using parallel combination. To find lowest resistance we have to add the resistors in the parallel combination and to find the highest resistance we have to add the resistors in the series combination.

How do you find the maximum resistance?

First find the “nominal resistance,” or 470K in this case. Take the nominal value and multiply it by 1 + your tolerance, which is (1+0.1). Then take the nominal value and multiply it by 1 – tolerance, or (1-0.1). The highest possible value is 517 K.

In which combination the value of resistance is minimum?

The value of resistance is maximum when the resistance are connected in series combination. The value of resistance is minimum when the resistance is connected in parallel connection.

What is the ratio of maximum to minimum for N resistors of resistance R?

1/N
the maximum resistance is NR and the minimum resistance is R/N, so their ratio is 1/N.

What happens to the resistivity of a metal wire if you double its length and double its diameter?

(d) Resistivity of wire remains constant. As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.

In which combination of resistance current is maximum?

Answer: In series combination of resistance, resistors aid up and opposes the current. In parallel combination, equivalent resistance will be less therefore current drawn will be maximum. For maximum current, resistance should be as small as possible that is achieved by parallel combination.

How do you connect two resistance to get maximum current?

a) For the minimum current flowing in the circuit, the resistors should be connected in series and for the maximum current in the circuit, the resistors should be connected in parallel with the battery.

What is maximum effective resistance?

Maximum effective resistance is total possible resistance of the circuit (series combination is used to increase resistance) Minimum effective resistance is the least possible resistance of the circuit (parallel combination is used to decrease resistance)