He also gained the ability to turn his powers "off", though this took time to control as he inadvertently fried a toaster at home. This switch to Clark Kent also left him as vulnerable as a normal human, which was a bit of a surprise to him when he stubbed his toe while answering the phone.
He learned how to turn off his abilities, but this proved challenging as he once accidentally electrocuted a toaster.  This transformation into Clark Kent also made him susceptible to normal human vulnerabilities, which came as a surprise when he bumped his toe while picking up the phone.