Question

Which term refers to the negative or positive pole of an electric current?

a) wavelength
b) polarity
c) waveform
d) modality

Answer 1

The term referring to the negative or positive pole of an electric current is polarity, which indicates the direction of an electrical field in relation to charge. so, option b is the correct answer.

Step-by-step explanation:

The term that refers to the negative or positive pole of an electric current is polarity. Polarity indicates the direction of a magnetic or electrical field. In the context of an electric current, conventional current is defined to move in the direction of the electrical field, meaning positive charges move in the direction of the electrical field.

Addressing the additional questions:

1. Terms like frequency, amplitude, and period are tied to the wave model of light (d).
2. Electromagnetic waves are categorized as transverse waves (b).
3. The direction of polarization for a polarized light wave is parallel to the direction of propagation and perpendicular to the direction of the electric field.
4. The word or phrase used to describe the loudness of sound is intensity level or decibel (b).
5. The direction of the electric field of a negative charge is inward, towards the negative charge (c).
6. The electric current is the charge that passes through a conductor per unit time, and the direction of the current is defined to be the direction in which negative charge would flow (c, d).