1000 ohm = - megaohm, the structure of sliding rheostat -, -, -, -, -, -

1000 ohm = - megaohm, the structure of sliding rheostat -, -, -, -, -, -

1000 ohm = 10 ^ - 3 megaohm, generally one megaohm is one million
Structure of sliding rheostat 1. Metal rod 2. Metal slide 3. Resistance wire 4. Ceramic tube 5. Bracket

What is the difference between the partial crimping method and the current limiting method of sliding rheostat

Voltage division, as the name suggests, is to divide the voltage. A sliding rheostat is paralleled in the circuit. When the two slides of the rheostat are together, the circuit part in parallel with the resistor is short circuited, that is to say, there is no current in that part of the circuit. When the two slides are gradually separated, the voltage of the circuit part in parallel with the sliding rheostat