A 12Ω resistor dissipates 8kJ of heat in 20s. Ca...
A 12Ω resistor dissipates 8kJ of heat in 20s. Calculate the current through the resistor
5.8A
6.9A
30.0A
33.3A
Correct answer is A
Q = I2Rt
I = √QRt
= √800012×20
= 5.8
A battery of e.m.f 10V and internal resistance 2Ω is connected to a resistance of 6Ω. Calculate ...
In a discharge tube, most of the gas is pumped out so that electricity is conducted at? ...
The diagram above shows two capacitors P and Q of capacitance 2μF and 4μF respectively connect...
The images formed by diverging lenses are always ...
The force with which an object is attracted to the earth is called its ...
A p-n junction diode is used as? ...
Electricity is supplied to a school along a cable of total resistance 0.5Ω with the maximum curre...
The operation of an optical fibre is based on the principal of ...