When the downward current flows in a straight vertical conductor, the direction of its magnetic field at a point due north of the wire is?
Aluminium is sometimes used as the leaf of an electroscope because it
The diagram above represents the stress-strain graph of a loaded wire. Which of these statements is correct?
A supply of 400V is connected across capacitors of 3μf and 6μf in series. Calculate the charge
A vibrator causes water ripples to travel across the surface of a tank. The wave travels 50cm in 2s and the distance between successive crests is 5cm. Calculate the frequency of the vibrator
