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Current Electricity
An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is
5 kWh
0.005 kWh
5 kWh
0.05 kWh
5 kWh
0.005 kWh
5 kWh
0.05 kWh
Answer
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Related Question
Current Electricity
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
1000 Ω
600 Ω
800 Ω
400 Ω
1000 Ω
600 Ω
800 Ω
400 Ω
Answer
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Current Electricity
An open resistor, when checked with an ohmmeter reads
High but within tolerance
Infinite
Low but not zero
Zero
High but within tolerance
Infinite
Low but not zero
Zero
Answer
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Current Electricity
A resistance having rating 10 ohms , 10 W is likely to be a
Wire wound resistor
Carbon resistor
Variable resistor
Metallic resistor
Wire wound resistor
Carbon resistor
Variable resistor
Metallic resistor
Answer
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Current Electricity
The current in the circuit having constant resistance is tripled. The power increases
1/3 times
3 times
1/9 times
9 times
1/3 times
3 times
1/9 times
9 times
Answer
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Current Electricity
The resistance of a conductor varies inversely as
Resistivity
Temperature
Are of cross-section
Length
Resistivity
Temperature
Are of cross-section
Length
Answer
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