Tutor profile: Shamima A.
Which is correct? a) A University b) An University
Option a is correct. Even though University starts with a vowel, it is pronounced as "u" and not as "uh" (as in umbrella), which is why option a is correct. The usage of 'a' or 'an' depends on the pronunciation of the vowels rather than its placement in a word.
Subject: Physics (Electricity and Magnetism)
Two resistors are parallel to each other. The voltage of one of them is 6V. What is the voltage of the other one and why?
6V. Voltages of two parallel resistors are the same.
6x + 9 = 0
6x = -9 x = -9/6 = -3/2
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