The S.I unit for current is
The charge on an electron is
Name the device or instrument to measure current
The SI unit for electric potential is
A toaster of resistance 100ohms is connected to 220 volt line. Calculate the current drawn by the toaster
A wire of resistance 20 ohm is bent in the form of a closed circle. What is the effective resistance between any two points at the ends of any diameter of the circle?
One horse power =
One gigwatt =
Calculate the power of a source if it produces an energy of 750 joules in 30 seconds.
An electric heater of resistance 8ohm draws 15A from the main supply in 2 hours. Find the rate at which heat is developed in the heater.
Name a device used to maintain the potential difference across the ends of the conductor.
Electric unit is
_______ is the safety device used in electric circuit
!KWH = _____ J
The SI unit for resistivity is