Question

When two resistances of 100 ohm and 200 ohm are connected in series and then Then the equivalent resistance of the combination will be ______ ohm. A) 100 ohm b) 200 ohm c) 50 ohm d)300 ohm

Answer 1

(d) When two resistances of 100 ohm and 200 ohm are connected in series, Then the equivalent resistance of the combination will be 300 ohm.

Given :

R₁ = 100 ohm

R₂ = 200 ohm

To Find :

Equivalent resistance of the combination

Solution :

Resistances are said to be connected in series if they are connected end to end consecutively so that the same current flows through each resistance when a potential difference is applied across the combination.

Given, two resistances of 100 ohm and 200 ohm are connected in series.

Thus,

Equivalent resistance of the combination (R) = R₁ + R₂

                                                                              = 100 + 200

                                                                              = 300 ohm

Hence, the Equivalent resistance of the combination is 300 ohm.

Option (d) is correct.