How many full adders are required to make an n-bit ripple carry adder?Question 4Answera.N-1b.2*Nc.N+1d.N

The number of full adders required to make an n-bit ripple carry adder is N. So, the correct answer is d. N.

Here's why:

A ripple carry adder is a digital circuit that produces the arithmetic sum of two binary numbers. It is called a ripple carry adder because each carry bit "ripples" to the next full adder.

For an n-bit ripple carry adder, you need n full adders. Each full adder is responsible for adding a single bit from each of the two numbers, plus a carry bit from the previous full adder (if there is one).

For the first bit (the least significant bit), you don't need to add a carry bit because there is no previous bit. But for all the other bits (from the second bit to the nth bit), you need to add a carry bit from the previous full adder.

So, for an n-bit ripple carry adder, you need n full adders.