`R_1` and `R_2` are two resistances they are connected in
parallel combinations
Write down their equivalent resistance in each case.

R_1 and R_2 are two resistances they are connected in series Write down their equivalent resistance in each case.

In parallel combination of resistance-

The series combination of two 10 ohm resistances is connected in parallel combination with a 20 ohm resistance. Determine the equivalent resistance of the final combination.

What percent will be the equivalent resistance of two resistances 2 Omega and 3 Omega in their parallel combination with respect to their equivalent resistance in series combination?

If ‘n’ no .of Resistance R are connected in series and then in parallel combination to get the equivalent resistance X and Y, then what is the relation between Y, X and R-

The equivalent resistances of two resistances in parallel combination is one-fourth of their equivalent resistance in series combination.If one of the resistance is 10 Omega then find the other.

Three 4 Omega resistances can be connected in different combinations, The probable values of the equivalent resistance are

Two cells of emf E_1,E_2 and internal resistances r_1,r_2 respectively are connected in parallel combination. Determine the equivalent emf of the combination.

Resistances of two coils of wire are 3 Omega and 6 Omega . If these coils be connected is (i) series and in (ii) parallel combination, then what will be the equivalent resistance in each case ?

There are 14 resistances each of magnitude 1 Omega . Keeping three of them in series in each row,four rows are arranged in parallel. The remaining two resistances are connected in series with the previous combination.Determine the equivalent resistance of the whole network.