The capacitance of a parallel-plate capacitor is increased by making the area of the plates
In the diagram above, the current passing through the 6\(\Omega\) resistor is 1.5A. Calculate the current in the 3\(\Omega\) resistor
An immersion heater is rated 120W. How long does it take the heater to raise the temperature of 1.2kg of water by 15oC. (Assuming heat lost to the surrounding is negligible. Specific heat capacity of water = 4200 Jkg-1K-1C)
The region around a magnet in which the magnetic influence is experienced is called
A device used to prevent wearing away of the make and-brake contacts of an induction coil is called a\an
