Because the current is alternating, the magnetic field of the iron core keeps doing what?

Because the current is alternating, the magnetic field of the iron core keeps doing what?

  • Correct Answer: reversing
  • decreasing
  • increasing
  • changing

Explanation: The transformer in the diagram consists of two wire coils wrapped around an iron core. Each coil is part of a different circuit. When alternating current passes through coil P, it magnetizes the iron core. Because the current is alternating, the magnetic field of the iron core keeps reversing. This is where electromagnetic induction comes in. The changing magnetic field induces alternating current in coil S of the other circuit.

Join our channels for latest updates

More Random Questions

Q: In amphibians, reptiles, birds, and mammals, blood flow is directed in two circuits: one through the lungs and back to the heart, which is called what?
Ans: metabolic circulation
Q: According to Ashtanga Hridayam, which Rasa is predominant in Haritaki?
Ans: Kashaya
Q: Which state's 'Masali village' has become the country's first border village to run on solar energy?
Ans: Gujarat
Q: A patient requires a procedure for kidney stones. Which advanced procedure is indicated?
Ans: Extracorporeal shock wave lithotripsy
Q: What system enters the brain stem and influences activity in the cerebellum, spinal cord, and cerebral cortex?
Ans: lipids system
Q: Who has been awarded the 'Indira Gandhi Peace Prize' on November 24, 2024?
Ans: Daniel Barenboim and Ali Abu Awad
Q: How many federal workers accepted buyout offers in February 2025?
Ans: 50,000
Q: Which barrage regulates the Ganga’s flow in Bihar?
Ans: Farakka Barrage
Q: A patient with chronic pancreatitis presents with steatorrhea. Which digestive enzyme deficiency is responsible?
Ans: Lipase
Q: All biochemical molecules have oxygen, carbon, and what other element?
Ans: calcium
Q: Which state government formed a task force to remove encroachment in forests and Western Ghats?
Ans: Karnataka
Q: Who became the official sponsor of FIFA World Cup 2026 and FIFA Women’s World Cup 2027?
Ans: Lay’s
Q: A patient with gestational trophoblastic disease develops metastases. Which advanced procedure is indicated?
Ans: Chemotherapy with hysterectomy
Q: What does a yellow triangular sign with a black symbol indicate?
Ans: Warning
Q: What is the term for the tiny holes in the skin that help us sweat?
Ans: Pores
Youngistan Junction
Youngistan Junction

Welcome to Youngistan Junction, your ultimate hub for staying updated with the latest in current affairs, general knowledge, and general studies! Whether you're a student gearing up for exams or just someone passionate about expanding your knowledge, Youngistan Junction is here to provide you with an extensive collection of well-curated questions and answers.

Articles: 6683