AutoSave ON A F8 ) . C G 0 6 ... Lab 7 (1) - Saved Home Insert Draw Design Layout References Mailings Review View Zotero ? Tell me Comments Editing Share Calibri (Bo... v 11 A A Aa Ap BE EVE VEE AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe Paste BIUvab X X A DAY Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Pane Lab 7 Magnetic Induction Part I Magnetic flux a) Recall and write down the definition of magnetic flux, the angle is between_[answer]_and _[answer]_ b) Write down the magnetic flux in each case use the symbol given in the diagram. If zero, please just write 0. a: [answer] b: [answer] c: [answer] 2. Open Friday's law simulator a) Keep all as it is when you just opened the simulator, do not move anything. 1. Is there any flux in the coil? [answer] I1. Is there any change in flux in the coil? [answer] Now select Show Field Lines, check if your answer is correct. answer] b) Now imagine that you are moving the magnet toward the coil. I. Is there flux in the coil? Page 1 of 5 1088 words X English (United States) Focus E + 109%AutoSave ON A F8 ) . C G 0 6 ... Lab 7 (1) - Saved Home Insert Draw Design Layout References Mailings Review View Zotero ? Tell me Comments Editing Share Calibri (Bo... v 11 Ap EEVEEE AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Paste BIUvab X X A DAY Pane 2. Open Friday's law simulator a) Keep all as it is when you just opened the simulator, do not move anything. I. Is there any flux in the coil? [answer] II. Is there any change in flux in the coil? [answer] Now select Show Field Lines, check if your answer is correct. [answer] b) Now imagine that you are moving the magnet toward the coil. 1. Is there flux in the coil? answer Is there any change in flux in the coil? [answer] III. Please state Lenz's law here: [answer] IV. Use the bottom wire, will there be any current according to Faraday's law, if so, what will be the direction the current (left or right) on the bottom wire. [answer] V. Now move the magnet into the coil, check the direction of the current, if the current flow to the left, the needle should show negative direction and vice versa. VI. Now leave the magnet inside the coil, is there any current? Why not? answer] c Now pull magnet out (move towards right) of the coil, what happens to the current direction. [answer] Page 1 of 5 1088 words X English (United States) Focus + 109%AutoSave ON A F8 9 . C G 0 6 ... Lab 7 (1) - Saved Home Insert Draw Design Layout References Mailings Review View Zotero ? Tell me Comments Editing Share Calibri (Bo... v 11 Ap EV EVEVEE 24 T AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe Paste BI U vab X X|A DAY Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Pane Ill. Please state Lenz's law here: [answer] IV. Use the bottom wire, will there be any current according to Faraday's law, if so, what will be the direction the current (left or right) on the bottom wire. [answer] V. Now move the magnet into the coil, check the direction of the current, if the current flow to the left, the needle should show negative direction and vice versa. VI. Now leave the magnet inside the coil, is there any current? Why not? answer] Now pull magnet out (move towards right) of the coil, what happens to the current direction. [answer] d) Now move the magnet in and out with faster or slower speed, observe and describe the difference in the current. [answer] e) In this simulation, where did the electric energy come from or who is doing the work? [answer] Part II Motional EMF Open the Motional EMF simulator a) Click play and observe. Suppose this purple force is a constant force applied by you on the conducting rod (red). The rod is on a frictionless conducting rail (Blue), the rail is connected to a resistor (green). Describe the motion of the rod with your constant force applied, describe what happens if you remove your (purple) force. When there is a constant force applied to the rod, it begins to accelerate. This causes a resistive force to pull on the rod which makes the rod reach a constant velocity. After the constant force is removed, the rod begins to slow down (negative acceleration) and Page 2 of 5 1088 words X English (United States) Focus E + 109%AutoSave ON A F8 ) . C G 0 6 ... Lab 7 (1) - Saved Home Insert Draw Design Layout References Mailings Review View Zotero ? Tell me Comments Editing Share Calibri (Bo... v 11 AD AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe BI Uvab X X|A DAY Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Paste Pane Part III Difference between a motor and generator a) Use the word Mechanical Energy and Electrical Energy to fill the blank below Here is the DC motor, Watch how it is turning inside a magnet, the energy transformation is from _electrical energy_to mechanic energy. _ This is a simple generator we have in our lab, by turning the big wheel, the coil inside the magnets will turn, then the light bulb can be lit up. Notice the similarity in the material needed Page 4 of 5 for a motor and a generator. The energy transformation is from mechanical energy_to electrical energy_? X English (United States) Focus E + 109% Page 4 of 5 1088 words