№4. Calculate the length of a copper wire of cross-sectional area 20 mm2 and resistance 0.85 Ohm. Resistivity of copper is 0,017 μOhm m

№5. The picture shows complex combination of three resistors. It is known the total resistance of the circuit is
2,2 Ohm. Find resistance R3, if R1=1 Ohm and R2= 2 Ohm. Find current I2, if U3 =6V





№6. Determine the resistance of the wire, which will release 33.75 kJ of energy in 5 minutes. The current is 1.5 A.

sasha2005k1    2   02.03.2021 14:25    1