Question

Consider the solenoid illustrated below in Figure 2.
Figure 2: Solenoid with North and South indicated.
In which direction should the current flow to obtain the indicated polarity?
A A to B
B B to A
C up and down
D down and up
Question 1.3 [2 marks]
Various aspects determine the resistance in a conductor. Which one of the
following does NOT play a role?
A The temperature
B The environment
C Thickness
D Type of material

Answer 1

For the first question regarding the solenoid, the direction of the current flow is related to the right-hand rule. If you want the solenoid to have a specific polarity, you need to determine the current flow accordingly. However, without the actual illustration of Figure 2, I can't specify A, B, C, or D as the correct answer. Typically, if you want the North pole to be at one end, you would use the right-hand rule: curl your fingers in the direction of the current, and your thumb will point in the direction of the North pole.

For the second question about the factors that determine the resistance in a conductor, the correct answer is:

**B The environment**

The resistance is influenced by temperature (A), thickness (C), and the type of material (D), all of which affect how easily electric current can flow through a conductor. However, the 'environment' is not a direct factor affecting the resistance in a typical theoretical context, though it might indirectly influence resistance in practical applications (e.g., due to ambient temperatures or conditions).