Question 2
In the circuit above, E₁ = 16.2 V, R₁ = 8.50 Ω, R₂ = 2.00 Ω, and R₃ = 6.50 Ω. The ammeter reads a current of 2.60 A. What is the voltage across resistor R₂?
1.80 V
22.1 V
16.2 V
5.20 V
Question 3
What is the value of R₃?
R₁ = 7.00 Ω, R₂ = 9.00 Ω, ΔV = 7.50 V, and I = 376 mA.
Question 1
A wire has a resistance of 9.40 Ω, a radius of 4.97 mm, and a length of 2.00 m, and we want to find out what material it is made out of. One way to do this is to calculate the resistivity of the material. Calculate the resistivity of the material used for this wire.
0.000375 Ωm
0.000365 Ωm
0.000355 Ωm
0.000730 Ωm