Question

Alternating current is so called because _______.

Options

• Voltage alternates between 0 V and 5 V

• Current is switched on and off alternately

• Polarity alternates from + to – and – to + with time

• Voltage alternates between 10 V and 15 V

Answer 1

Alternating current is so called because polarity alternates from + to – and – to + with time.

Explanation:

Alternating current is a type of current in which the polarity of the source changes on a regular basis. As a result, the positive and negative terminals ‘alter'.