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Chapter 22 – Electromagnetic Induction

1.    Describe an experiment to demonstrate electromagnetic induction. Explain the principles behind the phenomena. What variations in your experiment can you include to demonstrate the factors which affect the magnitude and the direction of the induced emf. When a magnet is pushed into the solenoid, there is a change in magnetic field lines linking the …

Chapter 21 – Electromagnetism

1.    In an electromagnet, adjusting the variable resistor alters the size of the current. Explain the effect on the strength of the electromagnet. Increasing the resistance of the variable resistance will decrease the current flowing through the wire which will decrease the size of the magnetic strength of the electromagnet.        What other methods are …

Chapter 14 – Electromagnetic Wave

1.    State the properties which are common to all forms of electromagnetic radiation. All are transverse waves. All travel with the same speed, 3 x 10^8 m/s in vacuum. They all obey the wave equation: They can be reflected or refracted They transports energy. 2.    How do the frequency, wavelength and speed of electromagnetic waves …