Suppose the area A of the wire loop in Example 21.1 (Fig 21.5) is increased and

Question

Suppose the area A of the wire loop in Example 21.1 (Fig 21.5) is increased and the bar magnet is also enlarged so that it still fills the loop. If the rest of the experiment (the values of B and delta t) stays the same, how is the magnitude of the induced emf affected?

(a) The induced emf is larger.

(b) The induced emf is smaller.

(c) The induced emf does not change because the magnetic field is the same.

Suppose the area A of the wire loop in Example 21.1 (Fig 21.5) is increased and the bar magnet is also enlarged so that it still fills the loop. If the rest of the experiment (the values of B and delta t) stays the same, how is the magnitude of the induced emf affected? (a) The induced emf is larger. (b) The induced emf is smaller. (c) The induced emf does not change because the magnetic field is the same.

Explanation / Answer

(c) The induced emf does not change because the magnetic field is the same.

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