Question

) What is the equivalent resistance of R1 = 47 Ω and R2 = 22Ω if they are connected in series? Show your solution:

2) What is the equivalent resistance of R1 = 47 Ω and R2 = 22Ω if they are connected in parallel? Show your solution:

3. In which circuit is the current the same in each element?

4. In which circuit are all the potential drops the same?

5. In which circuit is the total voltage the sum of all the individual voltages?

6. In which circuit is the equivalent resistance less than each individual resistance? 7. In which circuit is the equivalent resistance greater than each individual resistance?

Answer 1

(1) When connected in series -

Equivalent resistance = R1 + R2 = 47 + 22 = 69 ohm

(2) When connected in parallel -

Wquivalent resistance = (R1*R2) / (R1+R2) = (47*22) / (47+22) = 14.98 = 15 ohm

(3) Current will be the same when connected in series, means in circuit (1).

(4) Potential drop will be the same when connected in parallel.

(5) When connected in series, total voltage will be the sum of all the individual voltages.

(6) When connected in parallel.

(7) When connected in series.