Question

On which of the following no plus minus sign is marked. options a. a battery b. a resistor c. a voltmeter d. an ammeter​

Answer 1

A Resistor is not marked with plus/minus signs.

Detailed Discussion:

• In a circuit, certain components such as a battery, resistor, rheostat, voltmeter, ammeter and key.

• Now, whenever we try to demonstrate the circuit in a circuit diagram we need to write the polarities of each of these components (except the resistor).

• Voltmeters are connected parallel to the circuit whereas ammeters are connected in series with the circuit. The polarity of these instruments facing the the positive terminal of the battery is marked as positive and vice versa.

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