Theory

CH8 - ELECTRICITY

Which particle does not experience a force due to an electric field?A. \( \alpha \)-particleB. electronC. neutronD. proton

2009 Summer

Theory

CH8 - ELECTRICITY

Using the circuit shown, the current $I$ is found for various voltages $V$. The temperature of the resistor does not change. [Image_1: Circuit Diagram...

2009 Summer

Theory

CH8 - ELECTRICITY

In the circuit shown, ammeter X reads 0.5A. What does ammeter Y read? A. 0 B. 0.5A C. 3.5A D. 4.0A

2009 Summer

Theory

CH8 - ELECTRICITY

In the circuits shown, all the resistors are identical. Which circuit has the least resistance?

2009 Summer

Theory

CH8 - ELECTRICITY

In the circuit below, one of the lamps breaks, causing all the other lamps to go out. Which lamp breaks?

2009 Summer

Theory

CH8 - ELECTRICITY

Either a fuse or a circuit-breaker can be used to protect electrical cables from large currents that could cause overheating.If a fuse is used, in whi...

2009 Summer

Theory

CH8 - ELECTRICITY

The current in a lamp at full brightness is 0.25 A. The flexible cable to the lamp is designed for currents up to 5.0 A, so it can safely carry the 0....

2009 Summer

Theory

CH8 - ELECTRICITY

(a) Fig. 9.1 shows an a.c. supply connected in series to a diode and a resistor.[Image_1: Diagram of Fig. 9.1 with a.c. supply, diode, and resistor]On...

2009 Summer

Theory

CH8 - ELECTRICITY

The circuit shown in Fig. 10.1 uses a 12V battery. (a) Switch S is open, as shown in Fig. 10.1. State the value of (i) the reading on the ammeter...

2009 Summer

Theory

CH8 - ELECTRICITY

A pupil measures the potential difference across a device and the current in it.Which calculation gives the resistance of the device?A current + pote...

2009 Winter

Theory

CH1 - MEASUREMENTS AND UNITS

A geologist compares the volumes of three rocks, X, Y and Z. Three measuring cylinders contain different volumes of water. He places each rock into on...

2015 Summer

Theory

CH2 - FORCES AND MOTION

A car moves with constant speed and then constant acceleration.Which graph is the speed-time graph for the car?[Image_1: Graphs A, B, C, D]

2015 Summer

Theory

CH2 - FORCES AND MOTION

A car travels 100 km. The journey takes two hours. The highest speed of the car is 80 km/h, and the lowest speed is 40 km/h. What is the average spee...

2015 Summer

Theory

CH2 - FORCES AND MOTION

Diagram 1 shows a piece of foam rubber that contains many pockets of air. Diagram 2 shows the same piece of foam rubber after it has been compressed s...

2015 Summer

Theory

CH1 - MEASUREMENTS AND UNITS

A metal block has the dimensions shown. Its mass is 1000 g.What is the density of the metal?A $\left(\frac{5 \times 10}{1000 \times 2}\right)$ g/cm$^3...

2015 Summer

Theory

CH3 - FORCES AND PRESSURE

Four objects are each acted on by only two forces, as shown.Which object is in equilibrium?

2015 Summer

Theory

CH3 - FORCES AND PRESSURE

A student measures the length of a spring. She then hangs different weights from the spring. She measures the length of the spring for each different ...

2015 Summer

Theory

CH4 - FORCES AND ENERGY

Which energy resource is used to generate electricity without using any moving parts?A. geothermalB. hydroelectricC. nuclearD. solar

2015 Summer

Theory

CH4 - FORCES AND ENERGY

A cyclist travels down a hill from rest at point X, without pedalling.The cyclist applies his brakes and the cycle stops at point Y.Which energy chang...

2015 Summer

Theory

CH3 - FORCES AND PRESSURE

The diagram shows a simple mercury barometer.Which height is used as a measurement of atmospheric pressure?

2015 Summer