Q.1.
If a charge flows through a resistor, which of the following happens to the resistor?
Q.2.
In a filament lamp, in what form is most of the energy lost?
Q.3.
What is power?
Q.4.
What is the formula for power?
Q.5.
Calculate the power of an appliance that uses 1000 joules of energy in 5 seconds.
Q.6.
Power, potential difference and current are correctly related by which equation?
Q.7.
What is the voltage of an appliance if it uses 200 J per second when supplied with a current of 5 A?
Q.8.
Which equation correctly shows the relationship between energy transferred, voltage and charge?
Q.9.
What is the energy transferred if the voltage is 5 V and the charge is 10 C?
Q.10.
What size of fuse would be required for a 230 V, 500 W heater?