17. Determine the electrical resistance of the resistor R2. To do this, assemble the experimental setup using a current source, a voltmeter, an ammeter, a key, a rheostat , connecting wires, and a resistor designated R2. Using a rheo- stat, set the current in the circuit to 0. 4 A.Take the absolute error of measuring the current using an ampere me- ter to be 01A, and the absolute error of measuring the voltage using a voltmeter to pm 0.2V. In the response form: 1) draw an electrical diagram of the experiment; 2) write down the formula for calculating the electrical resistance; 3) specify the measurement results of current and voltage , taking into account the absolute- The sins; 4) Write down the numer -ical value of the electrical resistance. 18. Establish a correspondence between technical devices and physical laws. the principles underlying the principle of their operation. For each position of the first column, select the corresponding position from thesec- ond column and write down the selected numbers under the corresponding letters in the table. VCTPONCTBA technical PH3H4ECKHE patterns 1) the dependence of the force acting on a conductor with a current in a magnetic field on the strength of the current in the conductor 2) the dependence of the repulsive force is one- nominal charges of their magnitude 3) the dependence of the resistance of the conductor on its length 4) the dependence of the current strength in the circuit on its co- resistance A) electrometer B) ammeter

17. <br />1) The electrical diagram of the experiment would consist of a current source connected in series with a resistor R2, a voltmeter connected in parallel with the resistor R2, an ammeter connected in series with the circuit, and a rheostat used to control the current in the circuit.<br />2) The formula for calculating the electrical resistance is R = V/I, where R is the resistance, V is the voltage, and I is the current.<br />3) The measurement results of current and voltage, taking into account the absolute errors, would be:<br />Current: I = 0.4 A ± 0.1 A<br />Voltage: V = V2 ± 0.2 V<br />4) The numerical value of the electrical resistance can be calculated using the formula R = V/I, where V is the measured voltage and I is the measured current. Substituting the values, we get R = (V ± 0.2 V) / (0.4 A ± 0.1 A).<br /><br />18. <br />1) The dependence of the force acting on a conductor with a current in a magnetic field on the strength of the current in the conductor is described by the principle of the electromagnet, which is based on the interaction between the magnetic field and the electric current.<br />2) The dependence of the repulsive force between two charged objects is described by Coulomb's law, which states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.<br />3) The dependence of the resistance of a conductor on its length is described by Ohm's law, which states that the resistance of a conductor is directly proportional to its length and inversely proportional to its cross-sectional area.<br />4) The dependence of the current strength in a circuit on its resistance is also described by Ohm's law, which states that the current in a circuit is inversely proportional to the resistance of the circuit.