Tab.1

Niepewność u(i)

$$u\left( I \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 0,75}{100} = 0,0038A$$

Niepewność u(u)

$$u\left( U \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 75}{100} = 0,38V$$

Niepewność u(R)

$$u\left( R \right) = \sqrt{{(\frac{\partial R}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial R}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{1,64 \times 0,14 + 0,0 \times 1,41 \times 10^{- 5}} = 0,48\Omega$$

$$u\left( R \right) = \sqrt{{(\frac{\partial P}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial P}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{1,63 \times 0,14 + 0,0 \times 1,41} = 0,34\Omega$$

Tab.2

Niepewność u(i)

$$u\left( I \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 3}{100} = 0,015A$$

Niepewność u(u)

$$u\left( U \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 75}{100} = 0,38V$$

Niepewność u(R)

$$u\left( R \right) = \sqrt{{(\frac{\partial R}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial R}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{0,8 \times 0,14 + 0,0 \times 0,23 \times 10^{- 3}} = 0,34\Omega$$

$$u\left( P \right) = \sqrt{{(\frac{\partial P}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial P}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{0,23 + 0,0} = 0,48W$$

Tab.3

Niepewność u(i)

$$u\left( I \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 3}{100} = 0,015A$$

Niepewność u(u)

$$u\left( U \right) = \frac{klasa \times zakres}{100} = \frac{0,5 \times 150}{100} = 0,75V$$

Niepewność u(R)

$$u\left( R \right) = \sqrt{{(\frac{\partial R}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial R}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{1,67 \times 0,56 + 0,0 \times 1,41 \times 10^{- 5}} = 0,97\Omega$$

$$u\left( P \right) = \sqrt{{(\frac{\partial P}{\partial U})}^{2} \times {u(U)}^{2} + {(\frac{\partial P}{\partial I})}^{2} \times {u(I)}^{2}} = \sqrt{0,2 + 0,0} = 0,45W$$