विद्युत चुम्बकों (electromagnets) का कोर आमतौर पर नरम _______ जैसे लौह-चुंबकीय पदार्थ से बना होता है जिसमें उच्च पारगम्यता (high permeability) और कम धारणशीलता (low retentivity) होती है।

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?