Question

a wire of resistance 8Ω is cut into 4 equal parts and all are connected in parallel, the equivalent resistance of circuit would be :

Answer 1

Answer:

Explanation:

8 ohm was the resistance

If cut into 4 equal parts, then each part has

8/4= 2 ohm resistance.

Now if they are joined in parallel,

1/R= 1/2+1/2+1/2+1/2

1/R = 4/2

1/R= 2

R = 1/2 Ohm.

When converting to parallel, or series

• Always do the Reciprocal at last.

• Here, R is the equivalent resistance.
• In Series, we add all resistances normally
• There is no need of reciprocal.
• R = r1+r2+r3
• While in Parallel,
• R= 1/r1+1/r2+1/r3
• R is reciprocal of the result at last.