Question

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Class 10th PHYSICS

⏩Electricity Chapter


▶No SpAm❗❗❗❗​

Answer 1

Answer:

30 ohm

Explanation:

As it's given that

Length (l)

= 300m

Cross sectional Area (A)

= 1mm² Or 0.000001 m²

Resistivity (ρ)

= 1 × 10⁻⁷

Now as

Resistance = ρ × l ÷ A

= 1 × 10⁻⁷ × 300 ÷ (1 × 10⁻⁶)

= 1 × 10⁻⁷ × 10⁶ × 300

= 1 × 10⁻¹ × 300

= 30 ohm

Answer 2

hope it will help u!

THNKS!