1) A single circular loop with a radius of 22cm is placed in a uniform external magnetic field with a strength of 0.50T so that the plane of the coil is perpendicular to the field. The coil is pulled steadily out of the field in 0.25s. Find the average induced emf during this interval. 2) A coil with 205 turns of wire, a total resistance of 23 olhms, and cross sectional area of 0.25m2 is positioned with its plane perpendicular to a powerful electromagnet. what average current is induced in the coil during the 0.25s that the magnetic field drops from 1.6T to 0.0T? 3) A circular wire loop with a radius of 0.33m is located in an external magnetic field of strength 0.35T that is perpendicular to the plane of the loop. the field strength changes to -0.25T in 1.5s. find the magnitude of the average induced emf during this interval. 4) A 505 turn circular loop coil with a diameter of 15.5cm is initially aligned so that it is perpendicular to the Earth's magnetic field. In 2.77ms the coil is rotated 90 degrees so that its plane is parallel to the Earths magnetic field. if an average emf of 0.166V is induced in the coil, what is the value of the Earths magnetic field? 5) A circular loop made of flexible wire is located in a magnetic field. Describe three ways an emf can be induced in the loop. 6) A 256 turn coil with a cross sectional area of 0.0025m2 is placed in a uniform magnetic field of strength 0.25T so that the plane of coil is perpendicular to the field. The coil is pulled out steadily in 0.75s. find the average induced emf in the interval