Magnetic Field Due to Circular Current Carrying Wire

Practice Questions:

Question 1: easy

A length of wire carries a steady current. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same current is :

1. a quarter of its first value

2. unaltered

3. four times of its first value

4. half of its first value

View Answer

💬 Discuss this Question