A - Level Physics - Electricity - Low stakes quiz 1

Which circuit component would give this I-V characteristic?

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How much work is done on an electron by a 5 V potential difference?

• 0.2 eV

• 8x10^-19 J

• 3.2x10^-20 J

• 5 J

A filament lamp with resistance 12 Ω is operated at a power of 36 W.

How much charge flows through the filament lamp during 15 minutes?

• 26 C

• 1.6 kC

• 2.7 kC

• 6.5 kC

A rubber belt in an electrostatic machine has a width of 0.1 m and moves with speed 0.4 m s^–1.

Each square metre of the belt carries a charge Q coulomb. The charge is removed and transferred to a metal sphere.

What is the charge collected by the sphere each second?

• 0.016Q

• 0.04Q

• 0.25Q

• 4Q

An electric motor lifts a load of weight W through a vertical height h in time t.

The potential difference across the motor is V and the current through it is I.

What is the efficiency of the motor?

What does the area under a force-time graph?

• Kinetic energy

• Change in momentum

• Acceleration

• Velocity

Which graph shows the variation of momentum, p, with wavelength, λ?

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An electromagnetic wave has a speed, c in a vacuum. What is the speed of a different electromagnetic wave with twice the frequency?

• c/2

• 2c

• 4c

• c

Which of these particles can mediate the strong force?

• π⁺

• K⁰

• λ

• W⁺

The frequency of the first harmonic of a wire fixed at both ends is 300 Hz.

The tension in the wire is now doubled.

What is the frequency of the first harmonic after this change?

• 150 Hz

• 210 Hz

• 420 Hz

• 600 Hz