Grade 9 Load Calculation Worksheet
This worksheet covers fundamental concepts of electrical load calculation, including Ohm's Law and power formulas, suitable for Grade 9 math students.
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Grade 9 Load Calculation Worksheet
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Read each question carefully and show all your work. Use the formulas provided to calculate the electrical loads.
Key Formulas:
Ohm's Law: V = I × R (Voltage = Current × Resistance)
Power Formula: P = V × I (Power = Voltage × Current)
1. Which unit is used to measure electrical resistance?
Volts
Amperes
Ohms
Watts
2. If a device has a voltage of 120V and a current of 2A, what is its power consumption?
60 Watts
240 Watts
122 Watts
118 Watts
1. According to Ohm's Law, Voltage is equal to Current multiplied by .
2. The unit for electrical power is the .
1. A toaster oven draws 10 Amperes of current from a 120 Volt circuit. Calculate the resistance of the toaster oven.
2. An LED light bulb consumes 15 Watts of power when connected to a 120 Volt supply. What is the current flowing through the bulb?
Analyze the following simple circuit diagram and answer the questions.
1. Identify the components labeled in the circuit diagram (e.g., power source, load, switch).
2. If the battery provides 9V and the light bulb has a resistance of 3 Ohms, what is the current flowing through the circuit?
1. Increasing the voltage in a circuit will decrease the current, assuming resistance remains constant.
True
False
2. Power is directly proportional to both voltage and current.
True
False