Such a coil. will create a magnetic ï¬eld perpendicular to the magnetic needle. The ï¬eld changes direction in synchrony with the oscillation of the alternating current, so if. the frequency of the current is adjusted to the resonance frequency of the magnetic needle, the. current will set the needle in motion.
A complex number whose real part is zero is said to be purely imaginary, whereas a complex number whose imaginary part is zero is a real number. In this way, the complex numbers contain the ordinary real numbers while extending them in order to solve problems that cannot be solved with real numbers alone.
Any number in this set (...-4, -3, -2, -1) is a negative integer. Similar to positive integers, numbers such as -3.5 and -10 are not integers because they are not whole. Zero. Another way to look at integers is to say that an integer must be even or odd. Using this logic, zero is an integer, as it is an even whole number. Zero is not classified as a positive or negative number or integer. Algebra Word Problems. In algebra, you may be asked to solve an equation by providing the missing integer.