Question

Calculate the
The resistance of a conducting wire X of length 1 m is
5ohm.calculate the
resistance of the wire made by the same material whose length is 4 times
and area of cross-section is 5 times that of wire X. (At same
times that of wire x At same temperature​

Answer 1

$\huge{\underline{\sf{Solution:-}}}$

$\bigstar{\underline{\sf{Given:-}}}$

• Initial resistance for wire X = 5 ohm = p(L/A)

• Length of new wire = 4 times

• Area of new wire = 5 times

Hence , new resistance be R"

R" = p(L"/A")

=> R" = p(4L/5A)

=> R" = p(L/A) × 4/5

=> R" = 5 × 4/5

$\large{\boxed{\sf{=> R" = 4 ohms}}}$

______________________________________________________________________________

Answer 2

Answer:

Explanation:

→ Initial resistance for wire X = 5 ohm = p(L/A)

→ Now, length of new wire = 4 times

→ Area of new wire = 5 times

→ Hence , new resistance be R"

→ R" = p(L"/A")

→ R" = p(4L/5A)

→ R" = p(L/A) × 4/5

→ R" = 5 × 4/5

→ R" = 4 ohms.

→ so resistance = 4 ohm

HELLO BRAINLIEST FRIENDS HERE ARE SOME PREVENTIVE WAYS TO STAY SAFE FROM CORONAVIRUS:

1.CLEAN YOUR HANDS.

2.AVOID CLOSE CONTACT.

3.STAY HOME IF  YOU’RE SICK..

4.COVER COUGHS  AND  SNEEZES..

5.WEAR A FACEMASK IF YOU ARE SICK.

6.CLEAN AND DISINFECT.