Podcast
Questions and Answers
The publication is intended for educational purposes in MOE ______ only.
The publication is intended for educational purposes in MOE ______ only.
schools
The ______ and Communication
The ______ and Communication
Wireless Network
Home Automation ______
Home Automation ______
Controllers
An electric circuit is the physical pathway for a current to ______.
An electric circuit is the physical pathway for a current to ______.
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The three basic electrical quantities in a basic electric circuit are: supply voltage or electromotive force ______ ______ ______.
The three basic electrical quantities in a basic electric circuit are: supply voltage or electromotive force ______ ______ ______.
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An ammeter is used for measuring ______ flowing in the circuit.
An ammeter is used for measuring ______ flowing in the circuit.
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A voltmeter is used for measuring the emf of the battery, supply voltage and voltage across the load in the circuit. It is always connected in ______ to the load or supply source where the voltage is to be measured.
A voltmeter is used for measuring the emf of the battery, supply voltage and voltage across the load in the circuit. It is always connected in ______ to the load or supply source where the voltage is to be measured.
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Power is the rate of doing ______.
Power is the rate of doing ______.
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The units of measurement for power and energy in electric circuits are ______ and ______ respectively.
The units of measurement for power and energy in electric circuits are ______ and ______ respectively.
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The formula to determine the power in an electric circuit comprising one electrical load is P = ______ × ______.
The formula to determine the power in an electric circuit comprising one electrical load is P = ______ × ______.
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The formula to determine the energy in an electric circuit comprising one electrical load is E = ______ × ______.
The formula to determine the energy in an electric circuit comprising one electrical load is E = ______ × ______.
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An electric shock occurs when an electrical current flows through the ______ body
An electric shock occurs when an electrical current flows through the ______ body
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There are two types of electric shock: ______ contact and indirect contact
There are two types of electric shock: ______ contact and indirect contact
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The severity of injury from an electric shock depends on the amount of current flowing through the body and the length of time the current flows through the ______
The severity of injury from an electric shock depends on the amount of current flowing through the body and the length of time the current flows through the ______
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To work safely, it is important to switch off the ______ before working on a circuit
To work safely, it is important to switch off the ______ before working on a circuit
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According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature remains constant. The formula derived from Ohm's law is $V = I imes R$, where V is in volts (V), I is in amperes (A), and R is in ohms (Ω).
According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature remains constant. The formula derived from Ohm's law is $V = I imes R$, where V is in volts (V), I is in amperes (A), and R is in ohms (Ω).
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In a simple electric circuit, if the current is 0.5 A and the resistance is 20 Ω, the voltage is ___ V.
In a simple electric circuit, if the current is 0.5 A and the resistance is 20 Ω, the voltage is ___ V.
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In a simple electric circuit, if the voltage is 110 V and the resistance is 550 Ω, the current is ___ A.
In a simple electric circuit, if the voltage is 110 V and the resistance is 550 Ω, the current is ___ A.
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In a simple electric circuit, if the voltage is 24 V and the resistance is 10 kilo-ohms (kΩ), the current is ___ A.
In a simple electric circuit, if the voltage is 24 V and the resistance is 10 kilo-ohms (kΩ), the current is ___ A.
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In a simple electric circuit, if the resistance is 200 Ω and the voltage is 110 V, the current drawn is ___ A.
In a simple electric circuit, if the resistance is 200 Ω and the voltage is 110 V, the current drawn is ___ A.
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The current flowing in a circuit of 50 Ω is 0.2 A. The supply voltage is ___ V.
The current flowing in a circuit of 50 Ω is 0.2 A. The supply voltage is ___ V.
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Making energy-efficient choices allows us to save electricity and money without compromising on our quality of ______.
Making energy-efficient choices allows us to save electricity and money without compromising on our quality of ______.
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Set the air conditioner to about 25 °C. Use ______ Efficiently.
Set the air conditioner to about 25 °C. Use ______ Efficiently.
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Replace incandescent light bulbs with energy-saving compact fluorescent bulbs or ______ bulbs.
Replace incandescent light bulbs with energy-saving compact fluorescent bulbs or ______ bulbs.
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Series circuits have only one path for the current to flow, and the supply voltage is the sum of all the individual voltages. The total resistance in a series circuit is the sum of all the individual resistances. Applying Ohm's Law to a series circuit, the supply voltage is equal to the current multiplied by the total resistance, and the voltage across each component is equal to the current multiplied by its respective resistance. In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the total resistance is ______.
Series circuits have only one path for the current to flow, and the supply voltage is the sum of all the individual voltages. The total resistance in a series circuit is the sum of all the individual resistances. Applying Ohm's Law to a series circuit, the supply voltage is equal to the current multiplied by the total resistance, and the voltage across each component is equal to the current multiplied by its respective resistance. In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the total resistance is ______.
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In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the supply current is ______.
In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the supply current is ______.
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In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the voltage across R1 is ______.
In a series circuit with R1 = 10 Ω, R2 = 20 Ω, and VS = 120 V, the voltage across R1 is ______.
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In a series circuit with R1 = 40 Ω, IS = 0.5 A, and VT = 60 V, the resistance R2 is ______.
In a series circuit with R1 = 40 Ω, IS = 0.5 A, and VT = 60 V, the resistance R2 is ______.
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