Electric Circuits Answers

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Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements. The independent variable in Part I, the one that is intentionally manipulated, is the . The independent variable in Part II, the one that is intentionally manipulated, is the . The independent variable in Part III, the one that is intentionally manipulated, is the . The independent variable in Part IV, the one that is intentionally manipulated, is the .

Based on the trends you observed in the laboratory exercise, which objects would you expect to be attracted to a bar magnet? Check all that apply.

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The Earth has a magnetic field. If you were to use a bar magnet to represent the magnet causing the magnetic field, which representation would be correct?

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Use the drop-down menus to complete the passage. A galvanometer detects by showing needle movement in . If the wires in this galvanometer are attached to the terminals of a battery, the compass needle will move and point to the wrapped coil of wire. If the wires to the terminal connections are switched, the needle will move and point in the direction. The movement of the needle can be altered and read incorrectly if there is a strong nearby.

Which statements are true about moving the compass around the wire? Check all that apply.

Predict what would happen to the strength of the electromagnet in each situation. Using a battery with a higher voltage: Wrapping the wire around the nail only three times: Changing the direction of the current by reversing the battery connections: Using a plastic stick in place of the iron nail: Holding the nail vertically rather than horizontally: