Welcome to your 2365 602 Electrical Science
1.
Which of the following devices does not use the magnetic effect of electric current?
2.
What is the Quantity symbol for Mass?
3.
What is the SI unit of measurement for resistance?
4.
Which of the following makes use of the magnetic effect of an electric current?
5.
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is increased, the voltage induced across the coil will?
6.
What is the unit of measurement Tesla for?
7.
Which of the following statements is not true?
8.
Given the formula: Force (Newtons) = Mass (kg) x acceleration (m/s) 2 a body is accelerated at 2 m/sec when a force of 10 Newtons is applied to is the mass of the body will be:
9.
A circuit dissipates 3kW at a power factor of 0.7 when connected to a 230V a.c. supply. The current flowing in the circuit will be?
10.
Which Electronic component would be used in a domestic central heating digital thermostat?
11.
Which one of the following has the lowest resistivity?
12.
50 meters of cable has resistance of 8.64Ω, what is the resistance if the length is 100 meters?
13.
The resistance of a conductor is dependent on four factors?
14.
A boiler supplied from 230V will draw 3.1A, what will the resistance be?
15.
Which of the following devices are solely used to provide energy at the correct time and minimise wastage
16.
Which best describes the lever in the diagram?
17.
When the resistance of an electrical circuit is increased and the voltage stays the same, then the?
18.
What is the SI unit of measurement symbol for Luminous intensity?
19.
The voltage of the alternator is shown in the form of a?
20.
If a charge of 10 Coulombs passes through a circuit every 0.5 of a second, how much current is flowing?
21.
What would be the effect on magnetic flux for the two equal, current-carrying conductors shown?
22.
Refer to the figure shown. What does value 'B' indicate?
23.
What is the value of the total resistance in the diagram?
24.
An example of a class 1 Lever is?
25.
What is the formula for electrical charge?
26.
Transpose the formula R = pL/a to find p?
27.
What is "Potential Difference" measured in?
28.
A 2 kW, 230 V immersion heater will draw a current of?
29.
Which Electronic component is used in modern Dimmer switches?
30.
A 12V battery is connected across a set of resistors in series, values being, 60Ω, 30Ω, 100 Ω and 45Ω. The current flowing in the circuit is?