Question

Під час проходження струму 0,5 А по провіднику напруга на затискачах провідника дорівнює 1,5 В. Визначте опір провідника та якою стане напруга на кінцях цього провідника після того, як силу струму в ньому зменшили на 0,2 А.​

Answer 1

Ответ: 3 Ом; 0,9В

Объяснение:

Дано:

I1=0,5А

U1=1,5В

I1=I1-0,2А

============

U2-?

Согласно закона Ома, сопротивление проводника равно:

R=U1/I1=1,5/0,5=3 Ом

Cилу тока уменьшили на 0,2А

I2=I1-0,2=0,5-0,2=0,3А

Напряжение стало:

U2=I2*R=0,3*3=0,9В

Answer 2

Calculation of Resistance and Voltage Drop

To determine the resistance of the conductor and the resulting voltage drop, we can use Ohm's Law, which states that the voltage across a conductor is equal to the current flowing through it multiplied by its resistance.

Given: - Current (I) = 0.5 A - Voltage (V) = 1.5 V

Using Ohm's Law, we can calculate the resistance (R) of the conductor:

V = I * R

Substituting the given values:

1.5 V = 0.5 A * R

Solving for R:

R = 1.5 V / 0.5 A = 3 Ω

Therefore, the resistance of the conductor is 3 Ω.

Calculation of Voltage After Current Reduction

To determine the voltage across the conductor after reducing the current by 0.2 A, we can use Ohm's Law again.

Given: - Initial current (I) = 0.5 A - Current reduction (ΔI) = 0.2 A

To find the new current (I'), we subtract the current reduction from the initial current:

I' = I - ΔI = 0.5 A - 0.2 A = 0.3 A

Using Ohm's Law, we can calculate the new voltage (V') across the conductor:

V' = I' * R

Substituting the values:

V' = 0.3 A * 3 Ω = 0.9 V

Therefore, the voltage across the conductor after reducing the current by 0.2 A is 0.9 V.

Please note that the calculations provided are based on the information given in the question.