2 years ago

If current I=2A and resistance R= 5 ohms what is the potential difference (voltage) V?

Physics

1 answer:

damaskus [11]2 years ago

6 0

Answer:

10 V

Explanation:

From Ohm's law, V=IR where V is the potential difference voltage, I is the current and R is resistance. Substituting 2A for current and 5 Ohms for resistance then V=2*5= 10 V

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A 50-kg load is suspended from a steel wire of diameter 1.0 mm and length 11.2 m. By what distance will the wire stretch? Young'

lbvjy [14]

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3.5 cm

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mass, m = 50 kg

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Area of crossection of wire = π r² = 3.14 x 0.5 x 10^-3 x 0.5 x 10^-3

= 7.85 x 10^-7 m^2

Let the wire is stretch by ΔL.

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$Y =\frac{mgL}{A\Delta L}$

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