Question 32
Question 32 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
9. Electricity
9.1. Electric current

use, for a current-carrying conductor, the expression I = Anvq, where n is the number density of charge carriers

24. Medical physics
24.2. Production and use of X-rays

explain that X-rays are produced by electron bombardment of a metal target and calculate the minimum wavelength of X-rays produced from the accelerating p.d.

20. Magnetic fields
20.4. Magnetic fields due to curren...

explain the origin of the forces between current-carrying conductors and determine the direction of the forces