(1 + c)/(r + e + c). The money multiplier (also called the credit multiplier or the deposit multiplier) is a measure of the extent to which the creation of money in the banking system causes the growth in the money supply to exceed growth in the monetary base.
A buzzing light switch could mean the fixture is wearing out, causing an arc of electricity behind the wall plate. If this is the case, the potential for an electrical fire may exist.
1)A single light blinking - This most likely causes are a bulb that is loose in the socket, a defective bulb, or a deteriorated connection inside the wall switch. Try tightening the bulb connection (it might be too hot to touch if recently on, so wait a minute before checking).