Short answerEasy1 mark
What type of current is transmitted from the power station?
Topic: Current, resistance and circuits
Previous-year question practice database
Answer
Exam answer
Alternating current (AC).
Explanation
Transformers require AC and power is transmitted as high-voltage AC.
More from Current Electricity
In the circuit given below, identify the lamp (L1, L2, L3 and L4) whose failure would not interrupt the power supply to the other lamps.
(a) L1
(b) L2
(c) L3
(d) L42026The correct formula to calculate the equivalent resistance of two resistors R₁ and R₂ when connected in parallel, is:
(a) (R₁ + R₂) / (R₁R₂)
(b) (R₁R₂) / (R₁ + R₂)
(c) (R₁ − R₂) / (R₁R₂)
(d) (R₁R₂) / (R₁ − R₂)2026A substance whose resistance becomes almost negligible at a temperature near absolute zero is called a ............... [semiconductor / superconductor].2026How will the voltmeter reading change? (increase / decrease / remain the same)2026Justify your answer stated in (a) above.2026Calculate the ratio V1 : V2.2026