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3 years ago

A current of 0.2A flows through a component with a resistance of 40ohms calculate the potential difference

Physics

1 answer:

erastova [34]3 years ago

4 0

Answer:

Explanation:

Given parameters:

Current = 0.2A

Resistance = 40ohms

Unknown:

Potential difference = ?

Solution:

Potential difference is force that drives current in an electric circuit.

According to Ohms law, it is given as;

V = IR

V is the potential difference

I is the current

R is the resistance

Now, insert the parameters and solve;

V = 0.2 x 40 = 8V

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3 years ago

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Bumek [7]

Answer:

Part a)

H = 26.8 m

Part b)

error = 7.18 %

Explanation:

Part a)

As the stone is dropped from height H then time taken by it to hit the floor is given as

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so we will have

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Part b)

If sound reflection part is ignored then in that case

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$H = \frac{1}{2}(9.81)(2.42^2)$

$H = 28.7 m$

so here percentage error in height calculation is given as

$percentage = \frac{28.7 - 26.8}{26.8} \times 100$

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3 years ago

If the voltage in a wire is 10 volts, and the current is 5 amps, what is the resistance in the wire? Show work. Please put units

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Answer:2 ohm

Explanation:

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Answer:

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Explanation:

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In order to make things easier to describe and explain, let's call
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3 years ago