Lab On Electromagnetism

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Name: Lab Partner: Course: AP Physics Instructor: Period: 3 AP Lab #17 - Electromagnetism Purpose: Part A: Predict and determine the direction of the magnetic field created by a straight current carrying wire. Part B: Predict and determine the direction of the magnetic field created about a current carrying coil. Part C: Predict and determine the direction of the electromagnetic force on a current carrying conductor. Part D: Induce a voltage across the ends of a coil with a magnet and predict and determine how the number of loops in the coil, the speed of the magnet's motion and the strength of the magnetic field affect the induced voltage. Materials: 6 V battery, digital multimeter, two physics texts, ring stand, beaker, two bar magnets, magnetic compass, fine insulted wire, length of 12-gauge copper wire, and connecting wires with alligator clips, knife switch. Experimental Design & Procedure Data: Figure 1 Figure 2 Figure 3 Figure 4 Part A 1. Push the piece of bare copper wire through a sheet of paper and attach the ends of the bare copper wire to alligator leads. Support the paper and bare copper wire with two physics texts. Place the lower alligator clip and connecting wire on the lab table and hang the upper connecting wire from the ring stand. Finish the circuit with the connecting wires by attaching them to the switch and to the battery. (See Figure 1). 2. Determine the direction that current will flow in the circuit by noting which terminal of the battery is connected to the top of the wire and which terminal is connected to the bottom of the bare copper wire. 3. It will be necessary to determine which needle of the magnetic compass is the north facing needle by bringing it away from the lab station. 4. Place the magnetic compass on the paper close to the bare

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