A cylindrical resistor of radius 48 mm and length 20cm is


A cylindrical resistor of radius 4.8 mm and length 2.0cm is made of material that has a resistivity of3.50×10-5 Ω m.

a) What is the current density when the energy dissipation rate inthe resistor is 1.0 W?

b) What is the potential difference?

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Physics: A cylindrical resistor of radius 48 mm and length 20cm is
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