What is the maximum resistance of the circuit? What is the minimum resistance of the circuit? What is the maximum current in the circuit? What is the maximum p.d. across the lamp? A student sets up the circuit shown below. Calculate the current supplied to the circuit. What is the potential difference across the parallel section of this circuit? What is the current in the 100 resistor? Ω Power, Energy and Time A light bulb has a power rating of 60 W. How much electrical energy is transformed by the bulb in 1 s? State the energy changes involved when the lamp is switched on. The electric on a ceiling fan transforms 207 kJ of electrical energy in 30 minutes?. Calculate the power rating of the motor in the fan? State the energy changes involved when the ceiling fan is switched on. How much electrical energy is transformed by the following appliances? A 400 W used for 45 s. A 300 W food processor used for 20 s. An 800 W iron used for 40 minutes. A 2.4 kW kettle that takes 5 minutes to boil the water inside it. What is the power rating of an appliance that transforms: 500 J in 5 s?
What is the maximum resistance of the circuit? What is the minimum resistance of the circuit? What is the maximum current in the circuit? What is the maximum p.d. across the lamp? A student sets up the circuit shown below. Calculate the current supplied to the circuit. What is the potential difference across the parallel section of this circuit? What is the current in the 100 Ω resistor? Power, Energy and Time A light bulb has a power rating of 60 W. How much electrical energy is transformed by the bulb in 1 s? State the energy changes involved when the lamp is switched on. The electric on a ceiling fan transforms 207 kJ of electrical energy in 30 minutes?. Calculate the power rating of the motor in the fan? State the energy changes involved when the ceiling fan is switched on. How much electrical energy is transformed by the following appliances? A 400 W used for 45 s. A 300 W food processor used for 20 s. An 800 W iron used for 40 minutes. A 2.4 kW kettle that takes 5 minutes to boil the water inside it. What is the power rating of an appliance that transforms: 500 J in 5 s?
EE1-ElectricityLOCKERBIE.docx