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anzhelika [568]
2 years ago
13

An LDR was placed near a light source. The following results were

Physics
1 answer:
Zina [86]2 years ago
6 0

Answer:

<em>V = 440I</em>

Explanation:

<em>According to ohm's law which states that the current passing through a metallic conductor at constant temperature is directly proportional to the potential difference across its ends.</em>

Let V be the potential difference

I is the current

R is the resistance

Mathematically;

V∝I

V = IR

Given

Potential difference V = 5.50Volts

Current = 12.5mA = 12.5*10^-3A

Current  I = 0.0125A

Recall that V = IR

R = V/I

Substitute the given parameters into the formula;

R = 5.50/0.0125

R = 440 ohms

<em>Hence the equation that links current, potential difference and resistance is expressed as;</em>

<em>V = I(440)</em>

<em>V = 440I</em>

<em></em>

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