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.
Natural number can have or cannot have zero but zero may be considered as a Whole Number, a rational, real, an algebraic and also a Complex Number. If we want to calculate the number of zero in the given number then simply count zeros. We can write one crore as 107. Exponent in 107 is 7 which means that there are 7 zeros in one crore. Another method to write total number of zeros in one crore is to multiply 10 seven times. That is (10 * 10 * 10 * 10 * 10 * 10 * 10) which gives 10000000. Thus total number of zeros in one crore is 7 (seven). Various operations such as multiplication, subtraction, addition can be applied on zero.