Two wires A and B have the same cross-section and are made of the same material. R_A = 800 \Omega and R_B = 100 \Omega. The number of times A is longer than B is :

Correct Answer is : None of the above

SSC JE Electrical Engineering 2014 Set 2 Paper

Question : 103 of 200

Marks: +1, -0

Two wires A and B have the same cross-section and are made of the same material.

R_A = 800 Ω

and

R_B = 100 Ω

. The number of times A is longer than B is :

Solution:

Resistance (R)

= {eL}/ A

R∝ L

(Two wire of Same material and same cross section Area )

R_A/R_B=L_A/L_B⇒L_1/L_2=800/100=8

So wire 'A" is 8 time longer than wire 'B'.

Go to Question:

Prev Question

Next Question