Electricity and Magnetism

Physics SL (FE2016)

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Physics SL (FE2016)

Available time 20 Minute(s)

A cylindrical resistor of volume V and length l has resistance R.

A lamp is connected to an electric cell and it lights at its working voltage.

Electricity and Magnetism

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Available time 20 Minute(s)

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A cylindrical resistor of volume V and length l has resistance R. The resistor has a uniform circular cross-section. What is the resistivity of the material from which the resistor is made?

$\frac{V}{R l^{2}}$

$\frac{V^{2} R}{l}$

$\frac{V R}{l^{2}}$

$\frac{V^{2}}{R I}$

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