series resistors R_S = R₁ + R₂ + R₃ + ...

parallel capacitors C_P = C₁ + C₂ + C₃ + ...

Resistor & Capacitor circuits Charging V = EMF(1 - e ^-t/RC ) Discharge V = V_oe ^-t/RC

Know how to construct a voltmeter or ammeter from a galvanometer

Why do meters change the voltage or current values in a circuit?

PHY162 Only

Application of Kirchhoff’s rules.

Chapter 20 Magnetism

How many "poles" does a magnet have?

What happens when a bar magnet is cut in half?

Have magnetic monopoles been detected?

How does a traditional compass needle indicate the direction of the magnetic field?

Is the magnetic field of the earth similar in pattern to the magnetic field of a bar magnet?

How does the position of the earth’s north magnetic pole compare to the position of the north geographic pole?

Why is it unlikely that at large bar magnet in the interior of the earth is responsible for the earth’s magnetic field?

magnetic declination dip angle

What situation will result in the creation of a magnetic field?

Know the right hand rule for determining the direction of B.

F = ILB sinθ F = qvB sinθ

Know the right hand rule for determining the direction of F.

What type of motion does a charged particle have in a uniform B field?

What causes the aurora?

For a long straight wire B = ( μ_o I )/ ( 2 π r) μ_o = 4 π x 10^-7

Know how to find the force for two long straight parallel wires that have current.

How is the Ampere unit defined?

Ampere’s Law Σ B_|| ΔL = μ_o I Know how to use this to find B for a solenoid

Why is coaxial cable used to carry TV (and other) signals?

Know how to find the direction of torque on a current loop in the presence of a B field.

How does a galvanometer display a reading that indicates the current value?

Why does a simple DC motor need a split ring commutator?

How does an ordinary speaker produce sound?

How does the Hall Effect indicate the sign of the charge carriers in a wire?

How does a mass spectrometer work?

What is a velocity selector?

162 Ampere’s Law for the inside and outside of a wire.

Magnetic bottle Van Allen radiation belts

List three ways that current can be generated if you have a loop of wire and a permanent magnet.

Magnetic Flux Φ_B = B A cosθ Faraday’s Law EMF = -N ΔΦ_B /(Δt)

What can cause the value of magnetic flux to be zero?

Know Lenz’s law Know how to find the direction of induced current.

Know how to find the value of EMF and current (magnitude and direction) for a rod moving on a set of rails that form a closed circuit.

TRUE or FALSE A changing magnetic flux will produce an electric field.

How do electrical generators produce EMF? EMF = N B A ω sin(ωt) ω = 2πf

How can the EMF be increased?

What is the difference in the construction of an AC and a DC generator?

Where is counter EMF found and what is its cause?

Why is counter EMF important?

Be able to do calculations of I and Power for electric motors.

Why do the lights in some kitchens dim when the refrigerator motor starts?

Where are eddy currents found and what causes them? What do eddy currents do?

What are magnetic brakes?

How is a transformer constructed? V_S = V_P N_S /N_P

What is transformed?

How are eddy currents minimized in a transformer? I_P V_P about = I_S V_S

Why are transformers important in the distribution of electrical power?

162

induction in microphones mutual inductance self inductance

energy in a magnetic field

LR circuit I = (V/R)(1 - e ^–t/τ ) τ=L/R

Why is impedance important in an AC circuit?

What is the phase relationship of V and I in an inductor, capacitor?

LRC circuit resonance impedance matching

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