4th Form Revision Questions 1

If a third bulb is added to two bulbs in parallel, what happens to the brightness of the original two bulbs?

• They stay the same brightness
• They get dimmer
• They get brighter

In a parallel circuit, current ...

• splits at junctions
• is the same for each component

Current flows from …

• positive to negative
• negative to positve
• either

Below the elastic limit, a force-extension graph for a rubber band produces a line which is …

• straight, and through the origin
• straight, not through the origin
• curved
• straight, cannot say whether through origin or not

The upper range of human hearing is …

• 20 000 Hz
• 20 000 kHz
• 2000 Hz
• 20 Hz
• 200 000 Hz

What is the resistance of a 5 Ω and a 10 Ω resistor in series?

• 15 Ω
• 3.75 Ω
• 7.5 Ω
• 5 Ω
• 50 Ω

The wavelength of a sound wave relates to its …

• pitch
• loudness

What type of electricity comes from UK sockets?

• 230 volts AC @ 50 Hz
• 230 volts DC @ 50 Hz
• 230 volts AC @ 60 Hz
• 230 volts DC @ 60 Hz
• 110 volts AC @ 60 Hz

Which component is this the V-I graph for?

• none of these

• thermistor

• diode

• resistor

• filament lamp

The normal operating current for a TV is 6 A. Which fuse should be used?

• 1 A
• 3 A
• 5 A
• 7 A
• 13 A