Final Answer:
The ohmic value of most composition resistors is given by: c) 1800.
Step-by-step explanation:
The ohmic value of resistors is typically measured in ohms (Ω), and it is determined by the composition of the resistor material. In this context, the correct answer is c) 1800. This value represents the resistance in ohms for most composition resistors commonly used in electronic circuits.
The resistance of a resistor is a crucial parameter that influences the flow of electric current in a circuit. Composition resistors are made from a mixture of materials to achieve specific resistance values. The standard unit for measuring resistance is the ohm, and the given options represent different magnitudes of resistance.
Choosing the correct resistor with the appropriate ohmic value is essential for designing and maintaining the desired performance of electronic circuits. In this case, an ohmic value of 1800 indicates a resistance of 1800 ohms. Engineers and electronic enthusiasts often select resistors with values that match the requirements of their circuits, ensuring proper functionality and performance.
In conclusion, option c) 1800 is the correct ohmic value for most composition resistors, reflecting the resistance in ohms that these resistors provide in electronic circuits.