Answer :
155Ω
Explanation:
R = R ref ( 1 + ∝ ( T - Tref)
where R = conduction resistance at temperature T
R ref = conductor resistance at reference temperature
∝ = temperature coefficient of resistance for conductor
T = conduction temperature in degrees Celsius
T ref = reference temperature that ∝ is specified at for the conductor material
T = 600 k - 273 k = 327 °C
Tref = 300 - 273 K = 27 °C
R = 50 Ω ( 1 + 0.007 ( 327 - 27) )
R = 155Ω
Answer:
155 ohms
Explanation:
Resistance is the opposition to the flow of electric current via a conductor. The expression bellow is used in calculating the resistance of a coil given the temperature coefficient of resistance of the coil;
R = Rn [1 + α (T - Tn)]
where
R is the conductor's resistance at T temperature
Rn is the conductor's resistance at Tn temperature
α is the temperature coefficient of resistance of conducting material
T is the conductor's temperature
Tn is the conductor's reference temperature.
The conduct in question is a coil,
given
R = ?
Rn = 50 ohms
α = 0.007/°C
T = 600 Kelvin
Tn = 300 Kelvin
Using the equation R = Rn [1 + α (T - Tn)] we substitute to find R
R = 50 [1 + 0.007 (600-300)]
using BODMAS The inner bracket comes first followed by multiplication, addition and then the outer bracket.
R = 155 ohms