calculate the resistance of a 5m length of a wire of area of cross section 0.01 mm square and resistivity 50 into 10 raised to -8ohm metre
kvnmurty:
area is millimeter square.. note.
Answers
Answered by
72
millimeter = 10⁻³ m
R = ρ L / A
= 50 * 10⁻⁸ Ohm-m * 5 m / [ 0.01 * 10⁻³ * 10⁻³ m² ]
= 250 Ohms
R = ρ L / A
= 50 * 10⁻⁸ Ohm-m * 5 m / [ 0.01 * 10⁻³ * 10⁻³ m² ]
= 250 Ohms
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Answered by
0
Answer:
R= rho× L/
=(50×10^-8) × 5/ (.01×10^-6)
because area is given in millimeter square. So ((10^-3)².
So, R= (250×10^-8) / (.01×10^-6)
R= 25000×10^-2=250 ohm
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