1) What is electromagnetic induction? a) Generating EMF when a magnetic field changes b) Storing electrical energy in a battery c) Measuring voltage in a circuit d) Moving electrons in a wire 2) What does EMF stand for? a) Electric Magnetic Force b) Electromotive Force c) Energy Motion Factor d) Electron Magnetic Flow 3) Which of the following is needed to produce EMF in a coil? a) A stationary magnet b) A moving magnetic field c) Only a battery d) A resistor 4) What happens to the current if the magnetic field around a coil does not change? a) It flows normally b) No current is produced c) It flows backward d) It becomes stronger 5) Which device works based on electromagnetic induction? a) Battery-powered flashlight  b) Electric generator c) Solar panel d) LED lamp connected to a battery 6) Lenz’s Law states that the direction of induced current: a) Opposes the change in magnetic flux b) Follows the direction of the magnetic field c) Disappears instantly d) Is always clockwise 7) How can EMF be increased in a coil? a) By keeping the magnet stationary b) By moving the magnet faster c) By using fewer turns in the coil d) By using a thicker wire only 8) When a magnet moves toward a coil, the induced current: a) Is zero b) Flows to oppose the approaching magnet c) Flows in the same direction as the magnet’s motion d) Appears only if the coil is heated 9) Which of these is NOT a requirement for electromagnetic induction? a) Changing magnetic field b) Conductor c) Motion d) Stationary magnet with constant field 10) A changing magnetic field in a closed loop always produces: a) A decrease in EMF b) An induced EMF c) No effect on electrons d) Only heat energy

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