Question

1. The essential component of a heater is an electrical element that converts electrical energy to heat energy. How much current is drawn by a heater with resistance 1k Ω at 220 V?

2. The current flowing through a resistor is 1.2A when a potential difference of 60V is applied. Determine the value of the resistance.
3. A 12V battery is connected across a resistor and causes a current of 5 mA to flow. Determine the resistance of the resistor. If the voltage is now reduced to 9V, what will be the new value of the current flowing?

4. What is the resistance of coil which draws a current of (a) 30 mA and (b) 20µA from a 60 V input coming from an amplifier?

Answer 1

Answer:

Explanation: That is the importance of power ,it is used to generate electrical power through the circuit it contained. In circuit it converts the energy into electrical power. The more power or electrical power in a circuit the higher rate it is in which energy is absorbed or released.