Physics Sem 2 Final Review

A circuit with 1.2 A and a voltage of 35 V will have a resistance of

• 42 Ω

• 29 Ω

• 36. 36. 2 Ω

• 120 Ω

The electric current in a wire from a generator will be

• alternating current

• direct current

• magnetic current

• friction current

The direction of the magnetic force will be

• Out towards you

• In away from you

• down

• left

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The total resistance in this circuit is

• 18 Ω

• 1.6 Ω

• 0.5 Ω

• 6 Ω

Which would create more electric current in the diagram?

• Reduce the number of wire coils

• Move the magnet slower back and forth through the coils

• Use a smaller and less powerful magnet

• None of these answers

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Light is a

• Mechanical wave

• Longitudinal wave

• Transverse wave

• Neither a wave nor a particle

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An ultrasonic frequency for humans would be

• 12 Hz

• 11,000 Hz

• 800 Hz

• 30,000 Hz

Light bending around a corner would be

• Dispersion

• Diffraction

• Refraction

• Reflection

A wave has a frequency of 23,000 Hz. The wave period is

• 23,000 s

• 3 x 10⁸ s

• 4 x 10^-5 s

• 2 x 10^-7 s

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Which is NOT a part of a longitudinal wave?

• Trough

• Compression

• Rarefaction

• Wavelength