Justin Jackson added 15 points to help the Tar Heels (7-1) cap a big week with an easy win over the cold-shooting Wildcats (5-1). North Carolina scored the first 10 points, then used an 18-4 run to build a 25-point lead before the break.
The Tar Heels shot 51 percent for the game and led by at least 20 points throughout the second half.
It was a good finish to a week that saw the Tar Heels get senior guard Marcus Paige back from a hand injury that had sidelined him since the preseason. Paige then scored 20 points Tuesday night in a victory over No. 2 Maryland in the ACC/Big Ten Challenge.
Britt, a junior guard, saw his minutes drop significantly with Paige's return to the rotation. He played just 10 minutes against the Terrapins after playing at least 17 through the first six games.
But Britt provided some scoring punch Sunday, going 6 for 8 from the field and knocking down a pair of 3s in 16 minutes of work.
That led a balanced effort that saw five players score in double figures, including Paige -- who had 13 points in his second game back.
Davidson had its first 5-0 start since the 1968-69 season and was coming off a 109-74 win against Charlotte in which junior Jack Gibbs scored a career-high 41 points on 14-for-17 shooting.
But the Wildcats quickly fell behind in this one, with Gibbs struggling to find his shot and the rest of his teammates having the same trouble right along with him.
Davidson made just 8 of 34 shots (24 percent) and 3 of 16 3-point tries in the opening half as the game quickly got away, with UNC leading 47-24 by the break.
Gibbs finished with 19 points on 7-for-20 shooting to lead Davidson, which shot 34 percent for the game and made 8 of 31 3s (26 percent).
Davidson: Starting forward Jake Belford didn't play in the second half. He went down in the paint on a rebound on the final play of the first half with an apparent neck injury, but was able to walk off the court with assistance. ... Jordan Barham scored 11 points. ... Davidson shot 46 percent after halftime.
UNC: Brice Johnson had 13 points and nine rebounds. ... Kennedy Meeks had 10 rebounds. ... UNC finished with a 52-31 rebounding advantage, scored 18 second-chance points and 16 points off turnovers.