Math, asked by nikil68, 2 months ago

A conductor slab of dimensions
3cm x 4cm x 6cm has a resistivity
p=3 x 10-2 Nm . Find the resistance
along the length 4cm.​

Answers

Answered by sakshisolanki9265
0

Answer:

9:1

Step-by-step explanation:

pls mark me as brilliant

Answered by tejash172209
1

Answer:

Given that,

The dimension of the block is 1cm, 3cm and 3cm.

The relation of the resistance of a conductor is

R=ρ

A

l

....(I)

Where,

ρ = resistivity of the material of the conductor

A= area of the cross section of the conductor

l= length of the conductor

Now, the resistance is maximum

R

max

=ρ×

1×2

3

R

max

=

2

...(II)

Now, the resistance is minimum

R

min

2×3

1

R

min

=

6

ρ

...(III)

Now, from equation (II) and (III)

The ratio of maximum resistance and minimum resistance is

R

min

R

max

=

6

ρ

2

ρ3

R

min

R

max

=

2

3

×

1

6

R

min

R

max

=

1

9

R

max

:R

min

=9:1

Hence, the ratio is 9:1

Similar questions